You are underway in restricted visibility and hear a fog sig

第1题

单选题If your vessel is underway in fog and you hear one prolonged and three short blasts，this is a （）.A vessel not under commandB sailing vesselC vessel being towed (manned)D vessel being towed (unmanned)

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第2题

单选题If your vessel is underway in fog and you hear one prolonged and three short blasts，this indicates a（）.A vessel not under commandB sailing vesselC vessel in distressD vessel being towed

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第3题

单选题You are underway in thick fog. You have not determined if risk of collision exists. Which statement is TRUE?（）.A Your speed must be reduced to bare steeragewayB A look-out is not required if the radar is onC Fog signals are only required when a vessel is detected by radarD The radar should always be kept on a short-range scale

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第4题

单选题The steering and sailing rules for vessels in restricted visibility apply to vessels（）.A in sight of one another in fogB navigating in or near an area of restricted visibilityC only if they are showing special purpose lightsD only if they have operational radar

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第5题

单选题On the high seas，a fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a（）.A vessel being towedB fishing vessel engaged in trawlingC vessel at anchor warning you of her locationD power-driven pilot vessel on station underway

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第6题

单选题The term restricted visibility，when used in the Rules，refers to（）.A situations when you can see vessels on radar that you cannot see visuallyB visibility of less than half a mileC any condition where visibility is restrictedD visibility where you cannot see shore

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第7题

单选题While underway，in fog，you hear a whistle signal of one prolonged blast followed by two short blasts. This signal is sounded by a vessel（）.A not under commandB being towedC on pilotage dutyD aground

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