核子潛艇眼睛是瞎的,如何捕捉敵艦? 【路克補貼】
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| 老頭 於 2002/06/20 21:27 | |
| 核子潛艇眼睛是瞎的,如何捕捉敵艦? 【路克補貼】 | |
老頭 於 2001/02/10 20:13 發表內容： 美國核子潛艦 撞沉日實習船 10人失蹤 國際新聞中心／綜合報導 美國海軍發言人表示，葛林維爾號在夏威夷歐胡島南方海域進行例行訓練演習，意外撞沉日本愛媛縣宇和島水產高校四百四十九噸的實習船「愛媛號」。事發後，船上廿五人搭乘救生艇逃生，但有十個人下落不明。至於六○八○噸的葛林維爾號潛艦則沒有明顯的撞擊痕跡。 而據日本廣播公司（ＮＨＫ）報導，愛媛號上的卅五人當中，有二十人是船員，另有兩名教師和十三名學生。
潛艇的一些操作細節﹐個人不大了解﹐不過﹐找船隻應該是用聲納﹐
有可能日本實習船當時在停船狀態！
1. 核子潛艇沒事的時候不會亂打主動聲納
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轉貼一篇Jane's對此新聞之評論文章... A US Navy investigation is underway to determine how a Japanese fisheries training vessel was sunk off Hawaii on 9 February when it was struck by the Los Angeles class nuclear attack submarine (SSN) USS Greeneville. However, while the SSN's commanding officer at the time, Cdr Scott Waddle, must accept full responsibility for the accident as the commander of a submerged submarine, the accident itself cannot be said to be totally avoidable. A modern submarine must rely on its passive sonar to scan the area above it as it surfaces. This will give the bearing of any contact in the area and to some extent an indication of its proximity by the noise level of the contact. No totally reliable range data, however, will be available. The process by which a submariner determines the proximity of a contact is known as target motion analysis. It's a simple geometric calculation which in the past was done by manual plotting, but even the use of sophisticated computers in modern submarines does not mean it is an infallible process. A former submarine commanding officer described the process to janes.com as being somewhat akin to "crossing a field of cows with your eyes shut. You have your ears to listen and you have the direction of each cow as it makes a noise," said the source, "but it's still possible that you might bump into one of them. Fortunately, the movement of surface shipping is less random than that of grazing cows." USS Greeneville, hit the 180ft-long, 499-ton Ehime Maru approximately nine miles south of Diamond Head, Oahu. The accident occurred when the SSN, which has a displacement of 6,082 tons (6,927 tons dived), was 'coming up from deep' during routine training roughly 20 miles from its home port of Pearl Harbor, Honolulu. Once hit, the Ehime Maru took less than 10 minutes to sink. The Japanese vessel's captain, Hisao Onishi, accused the crew of the Greeneville of doing nothing to help the survivors. "I could see several people on the [conning] tower," he said. "They lowered a rope ladder from the conning tower, but none of our crew members were rescued by the submarine. They were just looking until the Coast Guard arrived." However, there was, in fact, relatively little the crew of USS Greeneville could have done at this point beyond summoning urgent assistance. While Captain Onishi said that the conditions were calm enough for no water to enter the Ehime Maru's liferafts, the 6ft swell prevailing at the time could have been enough to swamp the submarine if any of the hatches on its casing were opened. US Coast Guard search and rescue helicopters arrived on the scene in 35 minutes and Coast Guard patrol craft 15 minutes later. The Ehime Maru had 35 passengers and crew on board; nine are still missing and presumed dead. Cdr Waddle has been reassigned to the staff of Commander Submarine Forces Pacific pending the results of the investigation. Captain Tony Cortese will serve as the interim commanding officer of USS Greeneville.
[[ 蠻好奇的:平民能掌舵]] 日本實習漁船遭到美國核子動力潛艇撞沈，美國政府正在調查潛艇人員是否按照適當程序浮出水面。 不過今天傳出意外發生時，有兩個平民正在掌控潛艇，但是否因此釀成意外，美國軍方不願意透露。 美國軍方十四日表示，日本實習漁船愛媛號出事時，肇事的美國潛艇，正由兩個平民操控，其中一人還在掌舵。軍方強調，邀請平民上軍艦是很平常的，而且在嚴密監督下，平民也可以進入控制台，但軍方不肯透露為何讓平民操控潛艇。僅表示這次意外是否和平民操控潛艇有關還需要調查。 目前美國海軍已經派出配備聲納和攝影機的海底探測器，尋找愛媛號殘骸，並準備三艘深海探測船，隨時支援打撈任務。美國政府正在調查潛艇快速浮出水面時，人員是否按照適當程序進行。通常潛艇會先使用隱性聲納搜尋海面，再以潛望鏡伸出水面掃描，探測海面船隻的位置、航線和速度，然後才浮出水面。 這次可能是因為海面浪高，潛望鏡沒有搜尋到日本漁船，或是潛艇估錯了漁船的航向和速度，也可能是潛艇預備浮出海面前待在水中的時間過久，造成漁船誤入危險區域未被發現。 如果調查顯示，潛艇沒有按照適當程序操作，艦長很可能會因過失罪名遭到軍法審判。(民視新聞郭淑芬編譯)
再轉貼一則Jane's的文章， USN investigates submarine accident By MICHAEL SIRAK; JDW Staff Reporter, Washington DC As Jane's Defence Weekly went to press, US Navy investigators were still trying to piece together the exact circumstances that caused the Los Angeles-class nuclear attack submarine USS Greenville to collide with and sink a Japanese fishing vessel. The collision, in waters off Hawaii on 9 February, left nine crew members of the Japanese ship missing presumed dead. Alongside the navy investigation, the US National Transportation Safety Board is conducting its own review. The accident occurred as the Greenville was performing an 'emergency main ballast blow' drill to surface rapidly as part of a training exercise. Investigators need to determine whether the submarine was within the waters of a training area and why the Greenville's sonar and periscope scans did not pick up the Japanese ship, the Ehime Maru. Adding to the controversy is the presence of 16 US civilians on board the submarine, several of whom were sitting in control positions as the submarine surfaced. At this point, Secretary of Defense Donald Rumsfeld said there is no evidence their presence played a role in the accident, but President George Bush has instructed Rumsfeld to review the Department of Defense's policies on civilian activity during military exercises.
平民在掌舵?!?不會吧?!
據了解﹐布希已向日本道歉。 | |
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