1915

JANUARY 1915

01

Ulan mineseeking in Meleda Channel.

Fri

Tb 52T unsuccessfully torpedoed by enemy submarine.

01/04

Warasdiner mineseeking.

04

Admiral Haus suggested using Novara to run 300t of munitions to Smyrna for Dardanelles but idea was rejected.

05

Csepel at Pola for cleaning of oil tanks and fitting of further machine-guns. Lika (I) at Pola.

06

Csikós submarine-searching near Sebenico.

Dinara on Sebenico station.

07

Turul and Huszar onto Sebenico station.

10

Novara joined fleet.

11

Wildfang returned to service.

17

French submarine Saphir (392t) wrecked in avoiding Dardanelles minefield.

18

Tb 2 rescued sailor from Italian SS Varese west of Peneda.

20

Lika (I) in dock for screw change until 01 Feb.

24

Huszar at Pola.

26

Tatra transferred to the Bocche.

28

Tb 54T at Pola for boiler change.

29

Tb 73F at Sebenico.

31

Tug Pronta requisitioned for towing duties with Sebenico District Naval Command.

French submarine Curie (397t) raised in Pola harbour.

FEBRUARY 1915

Balaton onto Cattaro station.

01

Kaiserin und Königin Maria Theresia to Sebenico with Tb 6.

Mon

Ulan searching for submarines off Budua. Lika (I) returned to service.

02/03

Tb 6 searching for enemy submarines off Chereseo.

03

Planet brought in wreck of flying boat E21.

05

SS Radium, collier, returned to her owners.

11

Wildfang transferred to Sebenico station.

14

Leopard assigned to be school ship of torpedo school (until 15 May).

Uskoke on patrol as far as Makarska with U6.

Csikós shelled Montenegrin positions at Antivari with Tb 15 and Tb 68F.

16

Lika (I) at Sebenico. U12 at Pola.

17

Dampfer I returned to her owners.

18

Tatra, Balaton and Orjen in attack in Strait of Otranto.

23

Tb 56T, Tb 76T, Tb 77T, Tb 78T, Tb 80T and Tb 81T at Pola. Tb 74T and Tb 75T to Pola.

24

French destroyer Dague (720t) mined off Antivari.

27

Unsuccessful offensive to break siege of Przemysl; siege continued until 14 Mar.

Dampfer XX (SS Fram) at Sebenico.

MARCH 1915

01 Mon

Tb 66F and Tb 67F in action against Antivari.

01/02

Ulan and Streiter protecting torpedo boat attack on Antivari Harbour.

Csikós and Tb 57T in action against Antivari; torpedoed Montenegrin royal yacht Rumija (140t).

02

Pandur in dock at Pola until 06 Mar.

03

Tb 69F and Tb 72F on reconnaissance off Antivari.

04

Aerial attack on French squadron south of Antivari.

Turkish request to buy 3 Austro-Hungarian submarines for Dardanelles defence; only 2 currently operational and request turned down.

British trawler Manx Hero (221t) sunk by mine in Mediterranean.

05

Air raid against Antivari.

06

Pandur returned to service.

15

German decision to send UB7 and UB8 to Pola by rail in sections.

18

Orjen at Sebenico. Tb 56T at Sebenico until 12 Apr. Tb 75T to Sebenico. Tb 81T at Sebenico.

19

Unsuccessful attempt by Austro-Hungarian troops to break out from Przemysl.

22

110,000 Austro-Hungarian troops surrendered to Russians at Przemysl, ending second siege.

23

Air raid against Antivari-Virpazar railway line.

25

Uskoke on patrol as far as Makarska with U4.

26

Dinara submarine-searching off Spalato.

31

Turul transferred from Sebenico to Cattaro.

Air raid against Antivari station.

APRIL 1915

SS Fasana requisitioned as minesweeper at Sebenico.

SS Colibri returned to her owners. SS Liburnia hired briefly. Tug C returned to her owners.

01

Warasdiner onto Cattaro station.

Thurs

Order placed with AG Weser of Bremen for two U-Boots (which became U10 and U11).

Dampfer XIX (SS Hrvat) returned to her owners; SS Zichy requisitioned as replacement.

03

Ulan to Pola.

Tender Nr. 9 transferred to 19 Corps.

Italian denunciation of Triple Alliance.

06

Austria-Hungary informed by Italy of her demands as price for neutrality: Trentino; Dalmatian Islands of Gorizia and Gardisca; primacy in Albania - not accepted.

07

Bread and flour coupons issued for first time in Wien.

08

Tug Stolvio requisitioned for use at Pola Arsenal and Harbour.

09

Sankt Georg at Pola.

10

Tatra in attack on Strait of Otranto. Triglav (I) to Cattaro from Sebenico for attack on Strait of Otranto. Orjen in action with Helgoland south of San Maria di Leuca.

Reassembly of German UB7 and UB8 completed.

Italian-held Durazzo shelled by Albanian rebels.

11

Use of bread coupons came into effect in Wien and Niederösterreich (rationing in Austria lasted until Nov 1922).

12

SS Trieste D sank in triest harbour due to overloading; not raised until 30 Jan due to unavailability of SS Belrorie and SS Titan.

13

Komet assisting Dampfer XIX near Torcola.

Velebit at Pola until 06 May for installation of additional weaponry. Balaton at Pola.

Tb 51T transferred from Sebenico to Pola.

15

Liability to military service in Austria-Hungary extended to those aged up to 50.

Huszar to Cattaro.

German UB3 transferred to Pola by rail.

142,000 Italian troops at Austrian border.

Military conscription extended to age 50 in Austria-Hungary.

16

Italian-held Durazzo again shelled by Albanian rebels.

Csepel at Pola.

17

Uskoke on patrol with U12.

SS Filippo Artelli officially hired.

18

Pandur to Cattaro.

19

Csikós mineseeking in Drin Bay.

20

Szigetvár at Pola.

21

Mb Kelvin purchased.

22

SS Francesca requisitioned for use as transport between Sebenico, Pola and Triest.

23

Csikós at Pola.

24

Warasdiner mineseeking with Pandur in Bojana estuary; shelled enemy positions at Antivari.

25

Allied landing at Gallipoli, Turkey.

SS Sirana returned to her owners.

26

Secret London Pact between Italy and Allies - Italy to enter War within one month; promised South Tirol (to Brenner Pass), Istria, Triest and Dalmatia (except Fiume) as booty.

SS Cement requisitioned for use at Castelnuovo

27

French cruiser Léon Gambetta (12,500t) sunk in ten minutes by two torpedoes from U5(von Trapp) in Strait of Otranto; 684 drowned, 137 survivors. French cruisers withdrawn from Otranto blockade.

Austro-Hungarian fleet warned of likely war with Italy.

30

Blitz to Pola for repairs.

MAY 1915

SS Bosnia transported guns fo shelling Mt. Lovcen.

Tug Ponsal returned to her owners.

01 Sat

Reka and Csikós escorted Novara from Pola to Cattaro.

02

Novara left Cattaro towing German UB8 for release in Ionian Sea.

03

Tb 15 rescued army pilot off Traste.

Tender/tug Fiume requisitioned for use at Pola Arsenal and Harbour.

04

Italy withdrew from Triple Alliance.

Szigetvár at Pola.

05

Csikós and Reka at Pola. Tb 76T to the Bocche.

Tug Sebino requisitioned for use at Pola Arsenal and Harbour.

06

Novara escaped French warships off Cephalonia having successfully towed and released German UB8, which was destined for Constantinople (arrived 11 May).

Velebit returned to service. Tatra in dock at Pola for screw change until 12 May.

07

Sinking of SS Lusitania (32,000t) by German U20 off South West Ireland - 1198 of 1959 lost, including 128 US citizens.

SS Pelagosa requisitioned as patrol craft at Fasana.

08

Warasdiner on reconnaissance off Pelagosa.

Csepel in dock for screw change.

09

Meat consumption in Austria restricted to five days per week (six was normal).

10

Tb 77T minesseking off Ancona.

Naval convention signed in Paris by Britain, Italy and France:

First Fleet to be based at Brindisi - part of Italian battle fleet plus 12 French destroyers, 6 French submarines, 4 British battleships, 4 British cruisers and British aircraft.

Second Fleet as support, based at Taranto, Malta and Bizerte.

11

Triglav (I) from Pola to Sebenico with U12 (German UB7) and thence to Ionian Sea.

Start of Austro-Hungarian mobilisation on Italian front.

12

Komet transporting mines from Pola to Metkovic. Tatra returned to service. Uskoke at Sebenico.

Meat ration for naval personnel reduced from 400g to 300g; bread ration reduced from 500g to 520g.

13

German U21 arrived at Cattaro from Germany bound for Constantinople.

15

Leopard reassigned from torpedo school to local defence work. Blitz to the Bocche with mines.

15/16

Triglav towed UB7 through Straits of Otranto, bound for Constantinople (arrived 21 Jun).

16

Austro-Hungarian concessions to Italy.

17

Tb 13 shelled by Montenegrin battery.

18

Tatra carried German Navy officer to Gjenovic to establish U-Boot station.

Sebenico established as guard ship at Novigrod (until 1917).

British capture of SS Proton (Greek ship of 1000t hired by Germany as U-Boot supply ship) in Eastern Mediterranean; subsequently interned at Alexandria.

19

Streiter on watch off Pelagosa until 22 May. Uskoke and Lika (I) patrolling between Pelagosa and Lagosta until 22 May.

Four Austro-Hungarian submarines at sea with cruisers and torpedo vessels to prevent surprise Italian attack.

21

Further Austro-Hungarian concessions to Italy.

Finanzdampfer Adria requisitioned as harbour defence vessel attached to Mars.

SS Magyar rehired for use as coal transport at Pola.

Motorboot 5 requisitioned from Triest Excise Directorate for use as dispatch boat at Pola.

23

ITALIAN DECLARATION OF WAR AGAINST AUSTRIA-HUNGARY (but not yet against Germany - see 28 August 1916) at 16.00 hrs.

Austro-Hungarian Fleet departed Pola at 20.00 hrs.

Huszar minelaying. Warasdiner put to sea with U9 (German UB3) from Pola; latter destined for Constantinople but lost without trace.

23/24

Dinara and Tb 53T in action against Ancona. Triglav (I) on security duties off Ancona. Tb 3 in action against Italian coast.

Lika (I) on reconnaissance between Pelagosa and Cape Gargano; shelled semaphore and radio station at Vieste; engaged Italian destroyer Turbine (330t). Orjen securing Pelagosa-Cape Gargano route during attack on Italian coast.

Italian dirigible Cittŕ di Jesi chased back to Italy.

24

Following ships engaged in major shelling of military,naval and strategic installations at Ancona:

Erzherzog Karl, Erzherzog Friedrich, Erzherzog Ferdinand Max,Habsburg, Arpád, Babenberg,Erzherzog Franz Ferdinand, four destroyers (including Csikós) and twenty torpedo boats.

Viribus Unitis, Tegetthoff and Prinz Eugen also bombarded Ancona, then returned to Pola.

Velebit in action against Ancona; shelled Italian airship Cittŕ di Ferrara.

Radetzky and two torpedo boats bombarded Pótenza, then returned to Pola for rest of War.

Zrinyi, with Tb 3 and Tb 4 which had been minesweeping, bombarded Senigalia, destroying a train and damaging railway station and a bridge, then returned to Pola for rest of War. Tb 3 unsuccessfully bombed by Italian airship.

Admiral Spaun and Wildfang shelled Italian signal station at Cretaccio Island.

Sankt Georg, with two torpedo boats, shelled Rimini, damaging a freight train.

Streiter shelled signal station near Torre di Mileto.

Szigetvar in action in Northern Adriatic.

Novara and Scharfschütze, with two torpedo boats (Tb 78T and Tb 79T), entered Corsini Channel and shelled torpedo boat station, semaphore station, trenches and battery positions. Tb 80T and Tb 81T in action against Porto Corsini.

Helgoland, aided by Ulan, Lika, Csepel and Tatra, sank Italian destroyer Turbine south of Pelagosa and took 35 PoWs. Tatra shelled railway embankment near Manfredonia; picked up survivors from Italian destroyer Turbine. Csepel shelled Manfredonia station; exchange with Italian destroyer Turbine and then picked up survivors,

Satellit and Uskoke on escort duty for group shelling Italian coast.

Austro-Hungarian flying boats shelled Venice and airship hangars at Chiaravalle.

Italian destroyer Zeffiro (330t) attacked Porto Buso, destroying pier and taking prisoners. Mb Leni sunk by enemy shell off Porto Buso; recovered.

Spalato returned to service - local defence at Pola.

Tug/tenders Mondina, Natissa and Rosandra requisitioned for use at Pola. Tug Duino rehired for use at Pola. Tug Aquileja A requisitioned for use at Pola Arsenal.

25

Tb 15 hunting enemy submarine off Punta d’Ostro.

SS Belrorie requisitioned as sea rescue vessel. SS Cementi returned to her owners. SS Titan requisitioned as rescue tug at Pola. Tug B requisitioned for use at Pola. Tug Titan requisitioned for use at Pola Arsenal and for rescue duties.

Two Pontonkran 25t and one Pontonkran 40t hired for use at Pola Arsenal. Pontonkran 40t hired for use at Cattaro.

British battleship Triumph (11,895t) sunk by German U21 off Gabe Tepe; 73 lost.

Six French seaplanes transferred to Venice under Italian maritime control.

26

U-boot fired torpedoes at Italian ships at Venice.

Italian blockade of Austria-Hungary announced.

Italian dirigible bombed Sebenico.

27

Erzherzog Eugen placed in command of troops on Italian front.

Saida and Tb 53T to Sebenico.

Tb 5 hunting enemy submarine off Rovigno.

Air raid against Venice. Italian airship Citta di Ferrara raided Sebenico and Proljansee.

Steam yacht Theodor rehired for use at Pola.

British battleship Majestic (14,820t) sunk by German U21 off Gabe Tepe.

28

Tb 67F at Pola.

29

Valona reinforced by Italians.

Austro-Hungarian aircraft bombed Venice Arsenal.

Steam launch Valdarche rehired for duties at Pola.

30

Turul at Pola for boiler change until 06 Jun.

Balaton to Lissa with U6.

Cyklop in collision with Dampfer XX; Cyklop sank.

Pola and Monfalcone bombarded by Italian destroyers; Pola bombarded Italian dirigible

31

Tb 15 salvaged army aircraft off Kobila.

Italian scout cruiser Quarto (3271t) recovered Austro-Hungarian seaplane which had ditched after bombing Brindisi and Bari.

JUNE 1915

Streiter mineseeking off Istrian coast and in Gulf of Triest, including towing damaged flying boat L42 into Triest, during Jun and Jul.

Incomplete Tb 82F, Tb 84F and Tb 86F towed from Porto Ré to Pola for completion; incomplete Tb 90F and Tb 91F towed from Porto Ré to Novigrad.

Italians raised Austro-Hungarian barge Monfalcone (525t) from Isonzo river; rebuilt at Venice as floating battery.

01

Ulan minelaying in Gulf of Triest. Uskoke to Pola for minelaying in Gulf of Triest. Huszar searching

Tues

for flying boat L41.

Austro-Hungarians bombed Bari and Brindisi. Flying boat L32 lost after Brindisi raid (pilot had been wounded by rifle fire from British light cruiser Amethyst (3000t)); L32 recovered by British cruiser Dublin (5400t).

Air raid against Brindisi. Italian raid on Austro-Hungarian coastal installations.

French floatplane squadron arrived at Venice.

02

Austro-German army marched back into Przemysl.

03

Tb Whitehead requisitioned for use at Brioni U-boot station. Mb Lazarus requisitioned for use at Pola Flying Station. Motorboot V requisitioned from Whitehead for use at Pola Naval Arsenal. Motorboot 6 requisitioned from S.T.T. for use at Pola Naval Arsenal.

French torpedo cruiser Casabianca (970t) sunk on one of her own mines.

04

German UB1 and UB15 rail-transported to Pola; became Austro-Hungarian U10 and U11.

British drifter flotilla left Poole for service in Aegean

05

Velebit minelaying off Spalato.

Motorboot VI requisitioned from Whitehead for use at Pola Naval Arsenal. Mb Scirocco requisitioned.

Italian cruisers shelled Dalmatian Islands’ lighthouses (Lissa, Sagosta, Cazza)and stations and Ragusa-Cattaro railway.

06

Turul returned to service at Pola.

Tb 51T, Tb 54T, Tb 56T, Tb 73F and Tb 77T laying mines off Spalato.

08

Turul returned to Cattaro.

Csikós unsuccessfully torpedoed by enemy submarine 30 nm off Pola.

Italian airship attack on Fiume. L48 brought down Italian airship Cittŕ di Ferrara. Tb 4 rescued her crew.

SS Radium rehired to transport magnesite.

08 or 10

U1I (German UB15) sank Italian submarine Medusa (248t) off Porto di Piave Vecchia.

09

Mixed force of British, French and Italian ships shelled Austro-Hungarian signal station at Cape Rondini in Albania.

British cruiser Dublin (5400t) torpedoed by U4 west of San Giovanni di Medua, forcing her to return to Brindisi and necessitating extensive repairs. Italian armoured cruiser Giuseppe Garibaldi (7350t) also attacked but unsuccessfully. British trawler Schiehallion (198t) sunk by mine in Mediterranean.

Italian Third Army, supported by Navy, captured Monfalcone.

10

Italian submarine Medusa (248t) sunk by U11 (German UB15) off Venice.

14

Tb 78T and Tb 81T minelaying off Lagosta.

15

SS Egida requisitioned for patrol duties in the Quarnero and off Fiume. SS Nautilus requisitioned. Mb Ottilie requisitioned for use at Castelnuovo Salvage Depot.

16

Velebit minelaying off Spalato.

SS Gelida requisitioned for use as depot ship for frozen meat at Castelnuovo.

17

Sankt Georg, Tb 57T, Tb 78T and Tb79T in attack on Italian coast; Tb 62T, Tb 63T, Tb 64F, Tb 67F, Tb 68F, Tb 69F, Tb 70F, Tb 72F, Tb 74T, Tb 75T and Tb 77T in action against Rimini.

17/18

Novara, Admiral Spaun, Ulan, Tb 55T and Tb 74T on reconnaissance off Italian coast. Tb 74T torpedoed Italian steamer Maria Grazia off Giulianova.

18

Novara and Admiral Spaun in attack at Rimini, with Scharfschütze and Uskoke.

Warasdiner on escort duty with U4.

Fanň shelled by Austro-Hungarian squadron.

Italian freighter Maria Grazia torpedoed by Tb 74 off Giulianova.

19

Novara and Admiral Spaun shelled Italian signal station, supported by Ulan.

20

Tb 77T at Pola for repairs. Mb Lilly purchased.

German UB15 joined fleet as U11.

20/1/4

Wildfang mineseeking off Istrian coast.

20/4/8

Ulan mineseeking in Gulf of Triest.

21

SS Sirena rehired. SS Gilda requisitioned and loaded with magnesite and equipment at Triest.

23

Start of First Battle of the Isonzo (until 07 July).

SS Gilda ran aground then hit mine 3˝ nm west north west of Punta Salvore; sank, without loss of life.

23 or 27

Serbian troops occupied Durazzo.

24

Tb 60T searching for mines off Salvore; struck and three lost.

25/26

SS Sarajevo torpedoed by 2 Italian MAS boats in Durazzo harbour.

27

Uskoke in action at Pesaro and Fanň.

U10 (ex-German UB1) sank Italian torpedo boat 5PN (120t) in Gulf of Venice.

German UC12 transferred to Cattaro, being first German U-Boot stationed there.

Air raid against Brindisi.

28

U4 found downed flying boat L43 and towed her to the Bocche.

29

Montenegrin troops occupied Skutari.

30

Italian troops repelled on line from Sagrado to Monfalcone.

SS Triest D finally raised (see 21 Apr).

JULY 1915

Wildfang mineseeking off Istrian coast until Sep.

SS Nautilus returned to her owners..

01

Scharfschütze minelaying in Gulf of Triest.

Thurs

U11 attacked by French seaplane from Venice.

German U-Boot half flotilla officially formed at Pola.

Gallinara (106t), Italy’s first Q-ship, commissioned.

Italian offensive on lower Isonzo repulsed.

02

Italian torpedo boat 17OS (120t) mined off Pirano by one of her own mines.

04

Admiral Spaun at Pola.

French auxiliary cruiser Carthage (1910t) torpedoed by German U21 off Gallipoli.

05

Csikós mineseeking off Istrian coast.

05/06

Wildfang minelaying with Chamäleon off Po delta.

06

Ulan and Csikós covering Chamäleon. Tb 75T minelaying off Po delta.

06/07

Italian cruiser Amalfi (9800t) sunk 20 nm off Venice by torpedo from U26 (German UB14); 66 lost.

07

Balaton towed German U-Boot U18 to Cattaro.

End of First Battle of the Isonzo.

Montenegrin troops repelled near Trebinje.

08

Reka mineseeking near Sebenico. Dinara mineseeking. Tb 71F at Castelnuovo.

Italian dirigible Cittŕ di Ferrara shot down by Austro-Hungarian aircraft near Lussin when en route to attack Rijeka (or possibly 08 Jun?).

09

Order placed with Whithead of Fiume for Havmanden class of submarines (U20 to U23; delivered Aug to Nov 1917).

10

Turul towed German U-Boot U25 from the Bocche out to sea.

11

Mb Delfino purchased.

Venice bombed by Austro-Hungarians for fourth time.

Italians occupy apparently unoccupied Pelagosa Island, landing 40-90 men and two 3 inch guns, as a prelude to occupying Lagosta Island.

12

Italians discovered six Austro-Hungarian signalmen hiding on Pelagosa.

Lagosta Island scouted and shelled by French, but Italian government vetoed French occupation.

13

Tatra shelled radio station on Pelagosa following aerial reconnaissance; deterred by French submarine Fresnel (398t), which was bombed by Austro-Hungarian seaplane.

15

Dinara mineseeking. Huszar undergoing boiler change at Pola until 01 Aug. Tb 51T at Sebenico.

German UB1 joined fleet as U10.

16

Turul in action against Bari.

17

Bulgaria signed treaty of alliance with Central Powers

Tb 61T rescued crew of L49 16 nm off Punta d’Ostro and took L45 under tow to the Bocche.

Air raid against Bari Station and Barletta.

Italian flagship cruiser Giuseppe Garibaldi (7350t) spotted by Austro-Hungarian aircraft shortly after leaving Brindisi.

18

Giuseppe Garibaldi sunk 15 nm off Gravosa by U4 while bombarding Ragusa-Cattaro railway; 50 of 590 lost. Italian scout cruiser Marsala (3575t) shelled Gravosa station. Italian scout cruiser Quarto (3271t) and three Italian destroyers attacked installation at Guiparra.

German light cruiser Breslau damaged by Russian mine; out of action for several months.

Start of Second Battle of the Isonzo (until 03 Aug).

19

Tb 51T, Tb 54T and Tb 73F laying mines off Lissa.

German UC13 arrived at Pola by rail; assembled as cargo submarine.

20

Tb 58T unsuccessfully torpedoed by enemy submarine off Porer.

20/23

Saida and Reka shelled bridges on Aso and Tessino.

22

Warasdiner escorted U24.

22/23

Tatra shelled railway bridge at Termoli.

23

Scharfschütze, Tb 55T, Tb 62T and Tb 69F minelaying in Gulf of Triest.

Velebit shelled railway bridges over Aso and Tessino.

Dinara in attack on San Bernadetto railway line and Grottamare railway station; came under machine-gun fire.

Balaton, Triglav and Lika (I) with Tb 81T in attack on Italian coast.

Austro-Hungarian cruisers and destroyers shelled Ortona, Termoli and Tremiti Islands.

Tb 74T and Tb 78T shelling Italian coast.

Tender Nr.10 requisitioned for use by Triest Mine Search Group and for towing duties.

Innsbruck bombed by Italians.

23/24

Csepel in action against Italian coast.

24

Tb 63T searching for submarine off Triest.

SS Belrorie returned to her owners.

26

Austro-Hungarian submarine supply station at Lagosta Island destroyed by French.

French submarine Mariotte (531t) sunk by German U-Boot in Dardanelles.

27

Novara and Admiral Spaun in action against Ancona. Also Streiter, which had to tow downed L42 to Pola. Tb 75T in action between Pesaro and Fanň. Tb 76T shelled by Italian batteries while attacking Ancona. Tb 79T in action against Italian coast.

Scharfschütze in dock at Pola for repairs until 24 Aug.

27/28

Helgoland, Saida, Balaton, Csepel, Lika (I), Tatra, Triglav (I) and Orjen plus Tb 74T, Tb 77T, Tb 80T and Tb 81T in action at Austro-Hungarian landing attempts at Pelagosa; 108 troops landed but repulsed for two weeks. Balaton unsuccessfully torpedoed by French submarine Ampčre (398t).

Austro-Hungarian cruisers and destroyers shelled Ancona-Pesaro railway and Fanň with aircraft support.

30

Velebit mineseeking off Sebenico.

31

Four Erzherzog battleships, three cruisers and sixteen destroyers left Pola, returning 48 hours later.

Dampfer II returned to her owners.

Tug San Marco requisitioned for towing duties at Triest.

AUGUST 1915

SS Illiria requistioned for use on Black Sea.

British transport Royal Edward (11,117t) sunk in Gulf of Cos by German UB14; over 900 lost.

01

Huszar returned to service. Reka under repair at Pola until 14 Sep.

Sun

Restored French submarine Curie commissioned in Kriegsmarine as U14.

02

Huszar at Cattaro.

03

End of Second Battle of the Isonzo.

05

U5 sank Italian submarine Nereide (225t) off Pelagosa.

Italian dirigible Cittŕ di Jesi shot down by anti-aircraft fire near Pola; brought into Pola by Tb 79T. Also involved in search were Satellit, Tb 9 and Tb 39.

06

Velebit mineseeking off Sebenico.

07

Tb 83F joined fleet.

Italian bombing raid on Triest.

08

Italians bombed Monfalcone dockyard.

09

Italians reinforced Pelagosa.

11

Pandur in action against Molfetta, shelled railway line. Huszar and Warasdiner shelled Bari.

Motor Yacht Viktor requisitioned and attached to Leopard.

12

Szigetvár at Pola.

U3 while surfaced attacked Italian auxiliary cruiser Cittŕ di Catania, which then rammed U3, rendering her unable to dive. French destroyers Aspirant Herber (530t) and Enseigne Henri (530t) joined counter-attack on U3. U12 sunk by mine off Venice while trying to enter harbour.

13

Sebenico flotilla shelled Bari and Molfetta.

U3 shelled and sunk by French destroyer Bisson (756t) north east of Brindisi.

British merchant ship Royal Edward (11,117t) sunk by U-Boot 6 nm west of Kandeliusa, Aegean Sea; 132 lost.

14

Tug San Marco returned to her owners.

15

Turul piloted in submarine U24.

Venice bombed by Austro-Hungarian seaplane.

16

Orjen shelled Pelagosa.

16/17

Tatra in action at further Austro-Hungarian landing attempts at Pelagosa.

17

Helgoland and Saida in action recovering Pelagosa; Velebit, Dinara and Balaton shelled Pelagosa; Tb 52T , Tb 74T, Tb 77T and Tb 81T in action at Pelagosa; Dinara unsuccessfully torpedoed by enemy submarine on return journey. The freshwater cistern was damaged and Italian evacuation had to take place the following day.

Streiter at Pola. Triglav (I) left Pola with U25.

Tug/tender Sirio requisitioned for use at Triest.

Italian submarine Jalea (248t) sunk by mine in Gulf of Triest.

18

Tb 15 hunting enemy submarine off Punta d’Ostro. Tb 64T unsuccessfully attacked by submarine 3 nm off Punta d’Ostra.

19

Huszar escorted German U-Boot U25 from the Bocche. Triglav (I) at Cattaro.

Tb 56T at Pola. Tb 80T shelling Pelagosa.

Tb 98M joined fleet.

20

Italian air raid on Austro-Hungarian airfield at Asiovizza.

21

ITALIAN DECLARATION OF WAR AGAINST TURKEY.

Austro-Hungarian aircraft reconnoitred Pelagosa and noted Italian evacuation.

23

Mb Lazarus I returned to her owners.

U34 and U35 arrived at Cattaro from Heligoland.

24

Scharfschütze returned to service.

25

Spitalschiff I returned to her owners.

Air raids against Brescia.

Fighting between Austro-Hungarian and Montenegrin troops near Cattaro.

28

SS Arimatea requisitioned for use on Black Sea.

29

U5 captured Greek steamship Cefalonia (1074 or 685t), bound for Italy with 2,000t of coal, off Durazzo.

30

Pandur brought captured Cefalonia into Cattaro.

SS Ritter von Bilinski requisitioned as patrol craft operating in Gulf of Triest.

31

Serbian troops at Durazzo.

British drifter flotilla left Falmouth for service at Otranto.

SEPTEMBER 1915

Allies established Otranto barrage.

Mb Samurai hired for use at Triest Flying Base.

02

British armed transport Southland (11,899t) torpedoed by German UB14 off Strati Island but

Thurs

managed to make Moudros.

04

British merchant ship Natal Transport (4107t) captured by U-Boot 40 nm west of Gavdo Island, Crete.

05

SS Illira sunk by Russian submarine Nerpa on Black Sea.

06

Bulgaria concluded alliance with Central Powers.

British torpedo boat unsuccessfully attacked German U33 50 nm west of Alboran Island.

07

Streiter unsuccessfully torpedoed by enemy submarine.

08

SS Bitinia requisitioned for use on Black Sea.

08/09

Saida, Helgoland, Tatra, Tb 51T, Tb 53T and Tb 56T in action at landing attempts at Pelagosa.

09

Balaton, Tb 77T, Tb 80T and Tb 81T in action at Pelagosa. Lika missed by, but Tb 51T seriously damaged by (17 lost), torpedo from French submarine Papin (398t) while conducting reconnaissance of Pelagosa.

Uskoke minelaying in Gulf of Triest. Tb 51T towed to Rogoznica by Tb 56T; then to Pola for repairs.

German U39 sank French SS L’Aude, British armed merchant vessel SS Cornubia (1736t) and French SS Ville de Mostaganem between Cartagena and Algiers.

Monfalcone dockyard shelled by Italians.

10

Scharfschütze on guard near Pelagosa.

11

Tender I requisitioned for use at Sebenico.

12

U15 joined fleet.

SS Carmen and SS Dubrovnik requisitioned for use on Black Sea.

65 herring boats from Hull began to arrive at Brindisi in order to form Otranto Barrage.

14

Reka returned to service at Pola.

SS Amphritite assigned for use as depot and accommodation ship at Gjenovic mainly for German U-boot crews.

15

Reka at Sebenico.

German U39 arrived at Cattaro from Heligoland.

British submarine S1 (254t) transferred to Italian Navy after one year’s service in British Royal Navy.

French submarine Fourcault (397t) sunk by Austro-Hungarian aircraft off Cattaro.

16

Dinara under repair at Pola until 04 Oct.

German U33 reached Cattaro from Borkum.

17

Unsuccessful raid on Triest by Italian aircraft.

18

Holtzendorff withdrew all U-Boots from South Western Approaches and English Channel due to American diplomatic protests, thus virtually confining U-Boot campaign to Mediterranean.

19

British troopship Ramazan (3477t) sunk west of Crete by German U35; 306 lost.

20

Velebit shelled Pelagosa. Tb 54T unsuccessfully torpedoed by enemy submarine 3 nm off Arcangelo. Tb 98M in dock for propeller change.

British merchant vessel Linkmoor (4306t) captured by U-Boot 50 nm west of Cape Matapan, Greece.

British submarine S2 (254t) transferred to Italian Navy after trials with British Royal Navy.

21

Dock III acquired from Cantiere Navale and stationed in the Bocche.

22

Velebit towed German U-Boot U18 from Curzola to Pola. Tb 53T at Fiume.

60 British drifters arrived at Otranto to begin barrage duties. British Admiralty decided to send submarines B6, B7, B8, B9, B10 and B11 to Venice with cruiser Marco Polo as depot ship.

Bulgarian Army mobilised in support of Central Powers.

23

Tb 53T departed Fiume for Cittŕ Vecchia escorting Whitehead dock; arrived 30 Sep.

25

Tatra at Pola undergoing engine repairs until 29 Oct.

26

British submarine S3 (254t) transferred to Italian Navy just before trials due with British Royal Navy.

27

Italian battleship Benedetto Brin (13,400t) destroyed by Italian-speaking Austro-Hungarian saboteurs at Brindisi; 456 dead.

28

British merchant vessel H C Henry (4219t) captured by U-Boot 59 nm south of Cape Matapan.

Austrian government ordered requisitioning of metal for war effort.

29

British merchant ship Haydn (3923t) captured by U-Boot 80 nm south east of Gavdo Island, Crete.

30

44 German U-Boots now operating - 13 present in Mediterranean; eight at sea and five at Constantinople - plus eleven Austro-Hungarian U-Boots.

OCTOBER 1915

Adria and Feuerspier established as accommodation ships for German navy personnel at Pola.

SS Austria damaged by explosion on land. Mb Concetta returned to her owners as unserviceable. Mb Marietta requistioned for use by Lussin Command.

Six British B Class submarines transferred to Venice. French withdrew twelve destroyers from Adriatic to Aegean to support Anglo-French landing at Salonika.

01

Tb 98M mineseeking between Parenzo and Pelago.

Fri

German U33 and U39 sank 18 steamers in Aegean.

02

British merchant ship Arabian (2744t) sunk by German U33 near Cerigo Straits. British merchant ship Sailor Prince (3144t) captured by U-Boot 56 nm south east by south from Cape Sidero, Crete.

03

Versuchsgleitboot completed.

04

Dinara returned to service.

05

Helgoland to Sebenico with Tb 98M. Tb 75T at Pola.

German U35 sank British armed boarding steamer Tara (1862t) off Sollum (towed lifeboats to Bardia on Libyan coast); later sank Egyptian coast guard Abbas (298t) and damaged Egyptian Nurelbahr in Sollum harbour.

Allied troops landed at Saloniki, Greece, against wishes of King Constantine but with approval of Prime Minister Venizelos.

06

Austro-German Invasion of Serbia.

U16 joined fleet.

British merchant ship Silverash (3753t) captured by U-Boot 184 nm east of Malta; British merchant ship Scawby (3658t) captured by U-Boot 220 nm east of Malta.

07

German approval given for six U-Boots to be assembled at Pola by German workers (U27 to U32).

British merchant ship Halizones (5093t) captured by U-Boot 122 nm south south east of Cape Martello, Crete.

08

British collier Thorpwood (3184t) sunk by U-Boot 120nm south of Crete.

09

Austro-Hungarian Invasion of Montenegro.

Fall of Belgrade to Central Powers and beginning of Serb retreat.

Pontonkran 40t transferred from Pola Arsenal to the Bocche.

British merchant ship Apollo (3774t) captured by U-Boot 63 nm south from Gavdo Island, Crete.

11

BULGARIAN DECLARATION OF WAR AGAINST SERBIA.

Austro-Hungarian and Bulgarian Invasions of Serbia.

Pandur on reconnaissance from Cattaro to Meleda.

British submarine B8 in collision with tug off Ancina while en route to Venice.

12

U-boot unsuccessfully torpedoed Italian destroyers Idardo and Borea.

British hired drifter Restore (93t) sunk by German U39 in Otranto Strait.

Order placed for eight UBII’s (U27 to U32 plus U40 and U41).

13

Csikós submarine-seeking near Rovigno.

Start of unsuccessful Italian offensive against Riva on Gardasee.

14

SERBIAN DECLARATION OF WAR AGAINST BULGARIA.

Komet, with Tb 25 in tow, ran aground at Dusac Island.

Von Trapp transferred from U5 to larger U14.

15

United kingdom and Montenegrin declarations of war against bulgaria.

16

FRENCH DECLARATION OF WAR AGAINST BULGARIA.

Start of Russian counter-offensive (Brussilow Offensive).

Komet towed off by Herkules and Gigant.

18 

Komet under repair at Pola until 03 Nov.

U-boot unsuccessfully torpedoed British cruiser Amethyst.

Tug S. Sabba hired by 19 Corps for transporting wood to Albania.

First British submarine patrol from Venice, by B9(287t), along Istrian coast.

Start of Third Battle of the Isonzo (until 04 Nov).

19

RUSSIAN AND ITALIAN DECLARATIONS OF WAR AGAINST BULGARIA.

Dampfer XIV armed.

22

Serbian government withdrawn to Kraljevo.

Tender I returned to her owners.

23

Tug San Marco rehired for towing duties at Sebenico.

24

Serb main armies cut off from French by Bulgarians. Cental powers cross the Donau near Orsova.

Tb 83F in action supporting air raid on Venice..

Pontonkran hired for use by Naval Architect at Gjenovic.

24/25

Air raids against Venice.

25

Austro-Germans occupied Arangjelovac and Valjevo.

Ulan, Wildfang and Tb 98M unsuccessfully torpedoed by enemy submarine off Cittanova while supporting air raid against Venice; Wildfang was towing flying boat L61. U16 and U17 were also involved in action against Venice.

Tb 87F joined fleet.

26

Germans link with Bulgarians south of Danube.

28

Sale of meat and sausages restricted to four days per week in Germany.

29

Tb 99M joined fleet. Tatra returned to service.

Admiral Haus told to prepare attack on Montenegro/Albania supply routes.

30

U17 joined fleet.

NOVEMBER 1915

French armed cruiser France IV torpedoed by German U-Boot in Western Mediterranean.

03

Bulgarians captured Nis, giving Central Powers rail link with Turkey.

Weds

Austro-Hungarian troops took Avtovac.

Komet returned to service.

British armed steamer Woodfield (3584t) sunk off Gibraltar by German U38; later fired at SS Mercian (6305t) killing 23 but failing to sink her.

04

End of Third Battle of the Isonzo.

Tb 19 at Zara.

Air ship attack on Miramar. Pope condemned bombing of Venice.

French transport SS Calvados sunk by German U38 (740 lost, mainly Senegalese troops).

05

British merchant ship Buresk (3673t) captured by German U38 30 nm north by west from Cape Bengut, Algiers.

06

German troops took Kraljevo.

British armed oiler Lumina (5950t) abandoned and sunk following attack by German U35 120nm south by east from Crete; British merchant ship Clan Macalister (4835t) captured in same incident.

Britishe merchant ship Glenmoor (3075t) captured by U38 5 nm north east of Cap de Fer, Tunisia.

07

Bulgarian troops took Krusevac.

German U38 sank empty French transport France IV off Sardinia and then (flying Austro-Hungarian flag) sank Italian emigrant ship Ancona (8188t) between Tunisia and Sardinia (208 dead including 25 American citizens); USA protest.

08

U-boot unsuccessfully torpedoed British cruiser Dublin.

British merchant ship Den of Crombie (4949t) captured by U-Boot 112 nm south by west from Cape Martello, Crete.

09

Dinara on reconnaissance off Pelagosa.

Tb 79T unsuccessfully torpedoed by enemy submarine while mineseeking off Parenzo.

German U38 (flying Austro-Hungarian flag) torpedoed Italian steamer Firenze (3960t) whose passengers included American citizens.

10

Scharfschütze unsuccessfully torpedoed by enemy submarine.

Tb 67F from Pola to Cattaro.

Italian armed merchant cruiser Bosnia (2503t) sunk.

Start of Fourth Battle of the Isonzo (until 03 Dec).

11

Büffel at Rose.

Flying boat L42 unsuccessfully attacked British submarine B11 off Citta Nuova.

12

Komet, with Tb 14 in tow, ran aground near Arlatore; towed off by Magnet; in repair until 16 Dec.

13

Italian steamer Firenze sunk by U-Boot while making for Port Said.

Allied decision to supply Serbia through Brindisi.

16

Further advances by Austro-German troops in Serbia.

18

Wildfang supporting aircraft operations against Venice.

Full German Cattaro U-Boot flotilla formed.

British collier Enosis (3409t) sunk by U-Boot 150nm east south east of Malta.

20

Reka on reconnaissance off Pelagosa.

21

Serbian government withdrew to Prizrend, Albania.

22

Motorboot VII requisitioned for use at Sebenico Flying Station.

22/23

Helgoland, Saida, Tatra and Lika (I) in sortie in Strait of Otranto and reconnaissance off Albanian coast; sank Italian picket boat Palatino (140t) and schooner/Q-ship Gallinara(106t; ex-motor schooner Nostra Signora Del Boschetto) en route to Northern Albania. Orjen from Sebenico to attack in Strait of Otranto; rescued crew of steamship Palatino. Triglav (I) in attack in Strait of Otranto; sank Italian sailing ship Kalmara.

Italian supply of Serb Army started (until May 1916).

23

Balaton in action in Strait of Otranto.

200,000 Serbs began 100-mile retreat into Albania.

24

Austro-Hungarian troops occupied Mitrowitz; German troops occupied Pristina.

French steamer Harmonie shelled by U-Boot and aircraft in San Giovanni di Medua harbour.

British trawler Ruby (198t) wrecked off Crete.

25

Motorboot 4 requisitioned for use by Triest U-boot Station. Tug/tender Sirio returned to her owners. Tender Nr.8 requisitioned for use at Triest.

27

Motorboot IX requisitioned for use at the Bocche U-boot Station.

British merchant ship Kingsway (3647t) captured by U-Boot 20 nm east south east from Cap Bon, Tunisia.

28

Motorboot, dispatch boat at Poal, destroyed by explosion.

29

Helgoland, Novara, six destroyers, six torpedo boats and an oiler transferred to Cattaro.

German UC13 lost by stranding in Black Sea.

British merchant ship Malinehe (1868t) captured by U-Boot 50 nm east of Malta.

French steamer Algerien sunk by U-Boot.

30

Montenegrin troops pushed back towards Plevlje. Bulgarian troops occupied Prizrend.

Tb 88F joined fleet.

British merchant ships Colenso (3861t) and Langston Hall (4437t) captured by U-Boot 95 nm and 112 nm east south east of Malta respectively.

DECEMBER 1915

Further Allied drifters sent to Otranto Barrage.

01

17,000 Serbian troops taken PoW in Prizrend sector.

Weds

German U38 and UC12 from Cattaro landed munitions for rebels in Libya.

Currently 92 British drifters based at Brindisi.

British merchant ship Clan Macloed (4796t) sunk by German U33 100 nm east south east of Malta and crew fired on by U33 as they took to boats; British merchant ship Umeta (5312t) captured by U-Boot 112 nm east south east of Malta.

02

British merchant ship Commodore (5858t) captured by U-Boot 160 nm east south east of Malta

03

End of Fourth Battle of the Isonzo.

Austro-Hungarian troops occupied Monastir on Serbia’s southern border.

04

Increase in Italian troop numbers at Durazzo and Valona.

SS Zoe Cosulich rehired as munitions depot ship at Castelnuovo.

Italian destroyer Intrepido (672t) and troop transport Re Umberto (3000t) sunk off Valona by mines from German UC14.

04/05

Pandur shelled San Giovanni di Medua.

05

Austro-Hungarian troops pushed Montenegrin forces back at Plevlje and Foca.

Dinara on reconnaissance off Pelagosa. Balaton in action in Strait of Otranto. Huszar, Tb 66F and Tb 67F shelled San Giovanni di Medua.

British drifter Hollybank in exchange of fire with northward bound U-Boot on Otranto barrage.

Italian troops despatched from Valona to secure Durazzo.

05/06

Helgoland, Novara, Turul and Warasdiner with supporting torpedo boats shelled Albanian coast from Bojana estuary to San Giovanni di Medua sinking three steamships - two Italian and Greek SS Thyra, which was still carrying ammunition destined for Montenegro - and then taking crew of French submarine Fresnel (391t) prisoner; then destroyed her - she was stranded in Bojana estuary (although Gardiner has her torpedoed by Austro-Hungarian destroyers; Compton-Hall has her surprised by Austro-Hungarian seaplaness off Cattaro and sunk by a torpedo boat).

Tatra in action in Strait of Otranto.

Sebenico flotilla sank four sailing ships at Durazzo.

06

ALBANIAN DECLARATION OF WAR AGAINST CENTRAL POWERS.

Helgoland (plus six destroyers) in attack on Durazzo; sank five steamships.

Turul unsuccessfully torpedoed by enemy submarine while departing Gulf of Cattaro.

07

Tb 78T at Cattaro.

Mb Lucy requisitioned for use by Sea Mine Command I, Parenzo.

British merchant ship Veria (3229t) captured by U-Boot 24 nm north west by west of Alexandria.

08

Csikós mineseeking off Pola.

Tb 51T returned to service at Sebenico (see 09 Sep).

09

Wildfang supporting aircraft operations. Velebit on reconnaissance off Pelagosa. Tb 73F in action against Pelagosa. Tb 74T at Cattaro.

British merchant ship Busiris (2705t) captured by U-Boot 190 nm west north west of Alexandria.

10

Heavy fighting in Lardaro and Riva sectors, Italy.

Scharfschütze in aircraft-supporting operations; found flying boat L69 off Porer and took her in tow.

Six French destroyers and two submarines arrived at Brindisi to aid the Serbs.

Completion of build up of Italian troops at Valona.

11

Successful seaplane attack on Ancona.

12

Reka and Velebit submarine-seeking off Sebenico.

Allied navies began evacuation of Serb Army from Albania (until 05 April 1916).

13

Szent Istvan joined fleet.

14

Austro-Hungarians occupied Vranja Gora.

Italy began evacuation of Austro-Hungarian PoWs from Albania to Sardinia on transports Dante Alighieri and America plus three French steamers - 17,000 evacuated from Valina in first fortnight.

15

Orjen at Pola.

16

Komet again returned to service. Tb 53T at Pola for maintenance until 12 Jan 1916.

Mb Fauno requisitioned for use at Pola Naval Flying Station. Tender Nr.20 requisitioned.

17

Montenegrin troops finally expelled from last footholds in Bosnia (Bjepolje and Gelebic).

Hippos at Pola.

17/18

Novara, Tb 74T and Tb 78T in action in Otranto Straits.

19

Szigetvár at Pola. Tb 85F joined fleet.

British Otranto barrage drifter Lottie Leask (94t) sunk off Saseno Island by gunfire from German U39, heading for Cattaro.

Troubridge placed in command of San Giovanni di Medua.

Italian troops arrived at Durazzo from Valone.

20

Velebit at Pola. Warasdiner took over convoy in Sabbioncello Channel and proceeded to the Bocche.

Tb 70F and Tb 81T in Cattaro. Tb 73F from Sebenico to Pola.

21

Csepel at Cattaro.

Italian destroyer sank Austro-Hungarian arms ship and rammed submarine.

22

Start of evacuation of Serbian army from Albania to Italy, Marseilles, Corsica and Corfu.

Mb Fauno transferred to harbour duties at Pola. Mb Manon II requisitioned for use at Pola Flying Station (purchased 30 Dec). Mb Toro requisitioned for use at Pola Naval Flying Station

23

Modifications ordered to three 4800t cruisers (ordered 16 May 1914 but not in fact begun).

SS Belrorie rehired for rescue work based at Sebenico.

24

Tb 61T at Sebenico.

Air raid against San Giovanni di Medua; four sailing ships sunk.

French liner Ville de Ciotat torpedoed and sunk by submarine with loss of 80 lives.

25

King Peter of Serbia evacuated to Italy.

26

French government gave order for Serbs to be evacuated to Tunisia; armoured cruisers Jules Michelet (13,105t) and Victor Hugo (13,108t) sent to Brindisi to begin evacuation.

27

Tb 85F mineseeking.

28

Helgoland on reconnaissance with Balaton, Csepel, Lika (I), Tatra and Triglav (I) between Brindisi and Durazzo. Helgoland and/or Balaton rammed and sank French submarine Monge (398t) which was recharging her batteries on the surface 15 nm south of Cattaro; picked up survivors, as dis Csepel.

Pandur to Pola. Tender Nr.20 returned to her owners.

28/29

Helgoland and destroyer group in attack on ships in Durazzo harbour. U15 on patrol off Durazzo.

Helgoland sank Greek steamer. Lika (I) and Triglav (I) strayed into an Italian-laid minefield - Lika (I) sank; Triglav (I) seriously damaged, taken in tow by Csepel then by Tatra and Balaton, but sank as enemy ships closed in.

Italian scout cruiser Quarto (3271t) and British light cruiser Dartmouth (5250t) inter alia deployed from Brindisi and chased retreating Austro-Hungarian ships. Tatra suffered damaged engine.

Last of group did not make Cattaro until early hours of 30 Dec.

SS Kupa torpedoed and sunk by French submarine Archimčde (598t) or Italian submarine off Cape Planka while under way from Metkovic; beached but not salved. Dinara picked up survivors; Tb 51T recovered bodies.

29

Tb 71F at Pola.

Mb Alga requisitioned for use at Pola Naval Flying Station.

30

Novara, Tb 78T and Tb 80T in action in Otranto Straits and against Brindisi.

British (P & O) armed liner Persia (7974t) sunk 70 nm south of Crete by German U38; 334 lost.

British armed liner Clan Macfarlane (4823t) sunk 66 nm south east by south of Crete; 52 lost.

31

Tb 85F to Gjenovic.

At this date, 6 German U-Boots stationed in Adriatic.