What radar can do in poor visibility is just find objects at sea in time, but it is not of much use for effective collision avoiding manoeuvring.
在能见度不良时，雷达虽能及时发现海上物标，但对避让操纵尚不能起很有效的作用。
Manoeuvring Diagram of Radar Preventing Collision is the course alteration diagram intended primarily for use in avoiding a vessel which cannot be sighted but can be detected by radar.
“雷达避碰操纵示意图”是供船舶在能见度不良，仪凭雷达探测而不是视觉所见时对它船采取转向避让用的。
Manoeuvring Diagram of Radar Preventing Collision is the course alteration diagram intended primarily for use in avoiding a vessel which cannot be sighted but can be detected by radar.
“雷达避碰操纵示意图”是供船舶在能见度不良，仪凭雷达探测而不是视觉所见时对它船采取转向避让用的。
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