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D Class Submarines Class Overview |
Dimensions, machinery and performance |
Length: |
167' 7" (a) |
Engines: |
2 six cylinder Vickers diesels |
Beam: |
20' 6" |
Motors: |
2 |
Draft: |
11' 5" (b) |
Shafts: |
2 |
Pressure Hull |
Horsepower |
||
Length: |
N/A |
Engines: |
1,750 (875 HP each) (e) |
Diameter: |
N/A |
Motors: |
544 (277 HP each) |
Displacement |
Speed |
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Surfaced: |
495 (c) |
Surfaced: |
14 knots (design 14.5 knots) |
Submerged: |
620 (d) |
Submerged: |
9 knots (design 10 knots) |
Diving Depth: |
100' |
Range |
|
Surfaced: |
2,500 NM @ 10 knots / 1,750 NM @ 11.2 knots |
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Crew: |
25 |
Submerged: |
50 NM @ 5 knots |
Construction notes: |
|
(a): |
D-1 length 163', D-2 length 162' 1" |
(b): |
D-1 draft 10' 5", D-2 unknown. |
(c): |
D-1 surfaced tons 483, D-2 unknown. |
(d): |
D-1 submerged tons 595, D-2 unknown. |
(e): |
D-1 engine HP 1,200 (600 HP each) |
Armament As Built |
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Number Carried
|
Type
|
Arrangement |
Maximum Range / Ceiling |
3 |
18" (450mm) Torpedo tubes |
2 bow 1 stern |
7,000 yards @ 29 knots (3.9 miles) 5,000 yards @ 35 knots (2.8 miles) 320 lb. TNT warhead 6 torpedoes |
1 (a) |
3"/40 (76mm) 12 pounder |
single mount |
11,750 yards @ 40° (6.6 miles) AA ceiling 19,000' @ 70° 12.9 lb HE shell Rate of Fire 15 RPM |
Armament notes: |
|
(a): |
Fitted only to D-4 and possibly D-6, mount was retractable but later permanently mounted. |
Name |
Builder |
Launched |
Commissioned |
|
D-1 (I-71) |
Vickers, Sons & Maxim Ltd. Barrow-in-Furness, England |
May 16, 1908 |
Sept. 1, 1909 |
|
Fate |
||||
Sunk as target Oct. 23, 1918.
Location unknown. |
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Name |
Builder |
Launched |
Commissioned |
|
D-2 (I-72) |
Vickers, Sons & Maxim Ltd. Barrow-in-Furness, England |
May 25, 1910 |
Mar. 29, 1911 |
|
Fate |
||||
Sailed from Harwich, England Nov. 24, 1914 and missing since then.
(Thought to have been sunk by a German torpedo boat on or about Nov. 25, 1914 near Borkum Island, Germany) Location: North Sea (The wreck has not been located) 26 crewmen killed, no survivors. (Roll of Honour) |
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Name |
Builder |
Launched |
Commissioned |
|
D-3 (I-73) |
Vickers, Sons & Maxim Ltd. Barrow-in-Furness, England |
Oct. 17, 1910 |
Aug. 30, 1911 |
|
Fate |
||||
Sunk Mar. 12, 1918, bombed in error by the French airship AT-0.
(some sources give the date as March 15) (Read the March 12, 2006 Daily Event) Location: English Channel, off Dieppe, France. (The wreck has not been located) 29 crewmen killed, no survivors. (Roll of Honour) |
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Name |
Builder |
Launched |
Commissioned |
|
D-4 (I-74) |
Vickers, Sons & Maxim Ltd. Barrow-in-Furness, England |
May 25, 1911 |
Nov. 29, 1911 |
|
Fate |
||||
Sold Dec. 19, 1921 and scrapped.
|
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Name |
Builder |
Launched |
Commissioned |
|
D-5 (I-75) |
Vickers, Sons & Maxim Ltd. Barrow-in-Furness, England |
Aug. 28, 1911 |
Feb. 19, 1912 |
|
Fate |
||||
Sunk Nov. 3, 1914 (mine).
Location: North Sea, 2 miles south of South Cross Buoy, Yarmouth, England. (The wreck has not been located) 21 crewmen killed, 5 survivors picked up by Faithful (trawler). (Roll of Honour) |
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Name |
Builder |
Launched |
Commissioned |
|
D-6 (I-76) |
Vickers, Sons & Maxim Ltd. Barrow-in-Furness, England |
Oct. 23, 1911 |
Apr. 19, 1912 |
|
Fate |
||||
Sunk June 24, 1918 by UB-73 (torpedo).
Location: North Atlantic, 14 miles north of Inishtruhull Island, Ireland. (55.37N - 07.15W) 24 crewmen killed, no survivors. (Roll of Honour) |
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Name |
Builder |
Launched |
Commissioned |
|
D-7 (I-77) |
Chatham Dockyard Chatham, England |
Jan. 14, 1911 |
Dec. 14, 1911 |
|
Fate |
||||
Sold Dec. 19, 1921 and scrapped.
|
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Name |
Builder |
Launched |
Commissioned |
|
D-8 (I-88) |
Chatham Dockyard Chatham, England |
Sept. 23, 1911 |
Mar. 23, 1912 |
|
Fate |
||||
Sold Dec. 19, 1921 and scrapped.
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Page created June 24, 2007 |