| イギリス王立海軍 “First World War at Sea 5 minutes history“ | |||||
| - | 1914 | 1915 | 1916 | 1917 | 1918 |
| capital ships 主力艦 | 69 | - | - | - | - |
| Dreadnought | 20 | - | - | - | - |
| pre-Dreadnought battleships | 40 | - | - | - | - |
| pre-Dreadnought battlecruisers 巡洋戦艦 | 9 | - | - | - | - |
| cruisers | 46 | - | - | - | - |
| light cruisers | 62 | - | - | - | - |
| gunboats 小砲艦 | 28 | - | - | - | - |
| sloops 砲艦(船団護衛艦)? | 11 | - | - | - | - |
| torpedo-boat destroyers 水雷駆逐艦 | 215 | - | - | - | - |
| torpedo-boats 水雷艦 | 106 | - | - | - | - |
| submarines | 76 | - | - | - | - |
| seaplane carrier 水上機母艦 | 1 | - | - | - | - |
| small minelayers 機雷敷設艦 | 7 | - | - | - | - |
| ドイツ帝国海軍 “First World War at Sea 5 minutes history“ | |||||
| - | 1914 | 1915 | 1916 | 1917 | 1918 |
| Dreadnought-standard battleship | 17 | - | - | - | - |
| Dreadnought-standard cruisers | 7 | - | - | - | - |
| Pre-Dreadnought battleships | 20 | - | - | - | - |
| modern light cruisers | 7 | - | - | - | - |
| older ships | 18 | - | - | - | - |
| submarines with petrol engines | 30 | - | - | - | - |
| submarines with diesel engines | 10 | - | - | - | - |
| submarines with diesel engines were building | 17 | - | - | - | - |
| 大日本帝国海軍 Anglo-Japanese Naval Cooperation, 1914-1918 Timothy D. Saxon | |||||
| - | 1914 | 1915 | 1916 | 1917 | 1918 |
| Battleships &Battle Cruisers | 14 | 17 | 14 | 16 | 16 |
| Armored Cruisers | 13 | 12 | 12 | 12 | 12 |
| Older Cruisers | 10 | 9 | 8 | 7 | 7 |
| Light Cruisers | 0 | 3 | 3 | 3 | 33 |
| Destroyers | 50 | 59 | 63 | 65 | 71 |
| Total | 90 | 100 | 100 | 103 | 109 |
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当時の対潜戦術？ One marked oversight in the maritime strategy was the failure to institute a convoy system until the last year of the war, when it was, to some extent, insisted upon by the United States Navy. Part of the problem was that anti-submarine warfare was in its infancy and sonar did not appear until almost the end of the war, while hydrophones were affected by the machinery and propeller noise of the submarine hunting vessel. Nevertheless, the Germans were having considerable success with surface raiders and Allies merchant shipping loses were so immense that the United Kingdom was itself in danger of starvation. 海洋戦略における一つの顕著な見落としは、アメリカ海軍がある程度主張していた戦争の最終年の時点に至るまで、護送船団方式を策定することに失敗したことであった。問題の一部は、対潜水艦戦は揺籃期にあり、対潜艦の機械とプロペラのノイズにハイドロフォン（潜水艦水中聴音装置）が影響を受けている一方で、ソナー（水中音波探知装置）はほぼ終焉を迎えるころまで出現しなかった。それにもかかわらず、ドイツは商船襲撃者としてかなりの成功をおさめ、連合側の商船の損失は極めて大きく、イギリスに飢餓の危険をもたらした。 |