次の英文を訳して下さい。
The Director of the Intelligence Division of the Admiralty, Rear-Admiral Henry Oliver, established a code breaking organisation to decipher German signals, using cryptographers from academic backgrounds and making use of the windfalls taken from the German ships. At first, the inexperience of the cryptanalysts in naval matters led to errors in the understanding of the material and this lack of naval experience caused Oliver to make personal decisions about the information to be passed to other departments, many of which, particularly the Operations Department, had reservations about the value of Room 40. The transfer of an experienced naval officer, Commander W. W. Hope, remedied most of the deficiencies of the civilians' understanding. On 14 October, Oliver became Chief of the Naval War Staff, but continued to treat Room 40 more as a fiefdom and a source for the informal group of officers around the First Lord of the Admiralty, Winston Churchill, which received decoded messages but had insufficient authority to use them to best advantage.
German ships had to report their position every night by wireless and British listening posts along the east coast took cross-bearings to find the positions of the ships when they transmitted. This signals intelligence meant that the British did not need wasteful defensive standing patrols and sweeps of the North Sea but could economise on fuel and use the time for training and maintenance. The Admiralty also uncovered the German order of battle and tracked the deployment of ships, which gave them an offensive advantage. The lack of a proper war staff at the Admiralty and poor liaison between Room 40, Oliver and the operations staff, meant that the advantage was poorly exploited in 1915. (It was not until 1917 that this was remedied.) When German ships sailed, information from Room 40 needed to be passed on quickly but Oliver found it hard to delegate and would not routinely supply all decrypts; commanders at sea were supplied only with what the Admiralty thought they needed. Information could reach the Grand Fleet late, incomplete or mistakenly interpreted. When Jellicoe asked for a decryption section to take to sea, he was refused on security grounds. With the German High Seas Fleet (HSF) confined to port after the British success at the Battle of Heligoland Bight in 1914, Admiral Friedrich von Ingenohl, the Commander-in-Chief of the HSF planned a raid on Scarborough, Hartlepool and Whitby on the east coast of England, with the I Scouting Group (Admiral Franz von Hipper), a battlecruiser squadron of three battlecruisers and a large armoured cruiser, supported by light cruisers and destroyers.
補足
回答ありがとうございます。図はないんですけど、前後見てみたら「くぼみ」のような気がします。