Make water (to) Seawater to flow into the vessel due to damage to its hull, or hatches awash and not properly closed
進水 因船體損壞或艙蓋被衝掉，海水流入船內
Manoeuvring speed A vessel’s reduced rate of speed in restricted waters such as fairways, harbours, etc.
操縱速度 船舶在航道或港內所減小的速度
Mass disease An illness preferably of an infectious nature seizing more than two persons on board at the same time
群疫 船上兩名以上人員同時患有的具有傳染性的疾病
Moor (to) To secure a vessel in a particular place by means of chains or ropes made fast to the shore, to anchors, or to anchored mooring buoys, or to ride with both anchors down
系泊 將鏈或繩系在岸上、錨上、錨泊的浮筒上，或雙錨溜錨，以將船固定在某一地點
Muster (to) To assemble crew, passengers or both in a special place for purposes of checking
集合 將船員和 / 或旅客集合在某一地點以核查人數
Not under command (NUC) A vessel which through exceptional circumstances is unable to manoeuvre as required by the COLREGs
失控船 船舶因異常情況而不能按避撞規則的要求進行操縱
Obstruction An object such as a wreck, net, etc., which blocks a fairway, route, etc.
礙航物 阻航道的沉船、網具等障礙物
Off air When the transmissions of a radio station or a Decca chain, etc., have broken down, switched off or suspended
停止發射 無線電臺、臺卡鏈站等損壞、關閉、中斷發射
Off station (of buoys) Not at the position charted
漂移 不在海圖標稱的位置上
Oil clearance An operation to remove oil from the water surface
油汙清除 清除海上汙油的作業
Operational Ready for immediate use
可操作 可即時使用
Ordnance exercise Naval firing practice
軍事演習 海軍發射演習
OSC On-scene commander: The commander of a rescue unit designated to co-ordinate search and rescue operations within a specified area
現場指揮員 在某一指定區域中指定作為搜救作業指揮的人員
Outbound / inbound vessel A vessel leaving / entering port
進 / 出港船 進入或駛離港口的船舶
Overflow Accidental escape of oil out of a tank when it gets too full because pumping was not stopped in time
溢油 因未及時停下泵浦致使艙櫃油品溢出
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