For clearing away the mines dropped by an enemy special vessels2 are employed. Each vessel3 is fitted on both sides with a curious contrivance known as the “picking-up gear.” This apparatus4 is lowered into the water, and “picks up” any mines which may lie in the path of an on-coming fleet. When a mine-field is discovered by either destroyers or seaplanes these vessels are immediately dispatched to destroy it; and they are aided, in the case of the British Navy, by a large flotilla of steam trawlers. Many of these auxiliary5 vessels are not fitted with the picking-up gear, but go to work in pairs. Two vessels, connected together by a long wire rope weighted in 180the centre to keep it submerged, range themselves on each side of a mine-field, and by steaming ahead in a parallel line sweep up the mines floating between them. This process can be carried on simultaneously6 by a large number of trawlers, covering a very wide area of sea. In the meantime the attached destroyers and seaplanes can be searching for new fields. It often happens during sweeping operations that mines are brought into contact with each other and violent explosions occur. Sometimes the vessels engaged in this hazardous7 work will themselves strike one of the mines, but it is more often the searching flotillas which meet with sudden disaster in this way. Fully8 equipped mine-sweepers usually precede a fleet of battleships and big cruisers through dangerous and narrow seas, within the likely zone of hostile mines.
The British Mine-Sweeping Fleet comprises the following vessels:—Circe (810 tons), Jason (810 tons), Speedy (810 181tons), Leda (810 tons), Gossamer9 (735 tons), Seagull (735 tons), Skipjack (735 tons), and Speedwell (735 tons).
These eight vessels are obsolete10 torpedo-gunboats which have been specially11 fitted out for the work of mine-sweeping. There is also a large flotilla of steam fishing trawlers engaged. Some of these vessels were purchased by the Admiralty before the war, and were also equipped for mine-sweeping; but many others were, by special arrangement, handed over to the Navy on the outbreak of war. The whole of the mine-sweeping fleet is manned by a special section of the Royal Naval12 Reserve, known as the “Trawler Section,” which consists of about 142 skippers and 1,136 men. This is, of course, in addition to the several thousand naval sailors employed on the regular mine-sweepers, named above, and also to those employed on the large number of additional small steamers taken over for this work by the Admiralty at the commencement of hostilities13. It is 182estimated that the task of keeping the North Sea clear of mines during the first four weeks of the Great War required over 100 vessels and 5,000 sailors, in addition to the usual destroyer and submarine patrols with their crews, and also to the seaplanes with their pilots and observers.
Almost any steamship14 can be quickly converted into an effective mine-sweeper, and for this reason it is impossible to give here more than the very briefest information concerning the vessels employed in these operations by the other Naval Powers at war. Russia had fifteen special mine-sweeping vessels building when war broke out; but, doubtless, many small merchant ships have since been used for this purpose. France employed a number of mine-sweepers in the Adriatic; and Japan used some in clearing the approaches to Tsing-tau. Germany and Austria, of course, did not need many vessels of this kind, as the Allied15 Navies laid 183comparatively few mines and German oversea commerce ceased to exist almost as soon as war was declared. It was in the North Sea, during the first phase of the naval war, that the value of a big British mine-sweeping fleet made itself so wonderfully apparent.
点击收听单词发音
1 sweeping | |
adj.范围广大的,一扫无遗的 | |
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2 vessels | |
n.血管( vessel的名词复数 );船;容器;(具有特殊品质或接受特殊品质的)人 | |
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3 vessel | |
n.船舶;容器,器皿;管,导管,血管 | |
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4 apparatus | |
n.装置,器械;器具,设备 | |
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5 auxiliary | |
adj.辅助的,备用的 | |
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6 simultaneously | |
adv.同时发生地,同时进行地 | |
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7 hazardous | |
adj.(有)危险的,冒险的;碰运气的 | |
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8 fully | |
adv.完全地,全部地,彻底地;充分地 | |
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9 gossamer | |
n.薄纱,游丝 | |
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10 obsolete | |
adj.已废弃的,过时的 | |
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11 specially | |
adv.特定地;特殊地;明确地 | |
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12 naval | |
adj.海军的,军舰的,船的 | |
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13 hostilities | |
n.战争;敌意(hostility的复数);敌对状态;战事 | |
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14 steamship | |
n.汽船,轮船 | |
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15 allied | |
adj.协约国的;同盟国的 | |
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