1915 11th January
Battle of Dardanelles
At Churchills request, the commander of the Royal Navys Mediterranean Squadron, Vice Admiral S.H. Carden proposed a plan for forcing the Dardanelles using battleships, submarines and minesweepers
First World War · Gallipoli · permanent subject timeline
Gallipoli Submarine Campaign
Allied submarine operations through the Dardanelles into Ottoman waters. This page combines historical context with 14 matching records drawn directly from the World History Database Gallipoli archive.
Historical context
Gallipoli Submarine Campaign: overview and significance
What happened?
British and Australian submarines attempted to pass the Dardanelles and operate against Ottoman shipping in the Sea of Marmara. These missions involved mines, currents, patrol craft and narrow-water navigation.
Why was it important?
Submarine operations disrupted Ottoman maritime transport and were among the more effective Allied naval activities connected with the campaign, even though they could not compensate for the failure of the land offensive.
World History Database records
Gallipoli Submarine Campaign timeline
The records below are selected from the 319-record Gallipoli archive and rendered as static HTML in chronological order.
1915
1915 25th April
AE2 Dardanelles Passage Begun
Stoker takes submarine AE2 into the defended Dardanelles on the morning of the Allied landings.
1915 25th April
AE2 Ordered to Disrupt Ottoman Reinforcements
Stoker receives instructions to enter the Sea of Marmara and attack Ottoman communications.
1915 27th April
E14 Enters Dardanelles Minefields
Boyle takes submarine E14 beneath the Dardanelles minefields toward the Sea of Marmara.
1915 18th May
E11 Dardanelles Passage Begins
Nasmith takes E11 through the heavily defended Dardanelles toward the Sea of Marmara.
1915 18th May
E14 First Marmara Patrol Completed
Boyle returns through the Dardanelles after a successful first patrol in the Sea of Marmara.
1915 23rd May
E11 Ottoman Gunboat Destroyed
Nasmith attacks a patrol vessel during E11's first offensive sweep beyond the Dardanelles.
1915 27th May
Battleship Support Reduced after U-Boat Losses
De Robeck withdraws major warships from close offshore support after submarine attacks sink Triumph and Majestic.
1915 May
E11 Sailing Vessel Disguise Attempted
Nasmith briefly uses a captured sailing vessel as camouflage while operating near Gallipoli.
1915 8th June
First E11 Marmara Patrol Ends
Nasmith returns after a patrol that sinks or damages numerous Ottoman vessels.
1915 10th June
E14 Second Marmara Patrol Begins
Boyle again takes E14 through the straits for a second offensive patrol.
1915 3rd July
E14 Second Marmara Patrol Completed
Boyle returns from E14's second patrol after further disruption of Ottoman shipping.
1915 August
E11 Second Marmara Patrol Opens
Nasmith begins another patrol intended to disrupt reinforcements and supplies for Gallipoli.
1915 November
Third E11 Marmara Patrol Conducted
Nasmith conducts a third patrol against Ottoman shipping before the Gallipoli campaign ends.
Editorial provenance
Sources and editorial review
Compiled and edited by World History Database.
Historical context is editorial material; the chronology is generated from World History Database Gallipoli and Dardanelles records.
Last reviewed: September 2026.
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