A、no fog signal
B、one short blast
C、one prolonged and three short blasts
D、one prolonged，one short，and one prolonged blast
更多“A tug is towing three manned barges in line in fog. The first vessel of the tow should sound （）.”相关的问题
A、A.shock loading on the tow line is reduce B、B.towing speed is improved C、C.the vessel is more visible from the tug D、D.the catenary of the tow line is reduced
A、The power-driven tug must maneuver to avoid collision B、You must maneuver to avoid the tug and tow C、You must maneuver to avoid collision only if the tug is to leeward and the wind is on your port side D、Both vessels are required to maneuver to avoid collision
A、A.directly astern and pushing the tow B、B.towing on a hawser C、C.towing alongside and parallel to the vessel it is towing D、D.towing on the hip
A、acts as a reserve length of towing hawser when the tug applies more power，and it dampens the surge effect of the tow B、gives an approximation of the amount of strain on the towing hawser C、is the dip in the towing hawser between the tug and the tow D、All of the above
A、A.The catenary in a hawser should be sufficient so that the hawser just touches the bottom B、B.The hawser is of sufficient length for towing when taut between tug and tow C、C.Increasing speed usually increases the catenary in the hawser D、D.Shortening the tow hawser generally decreases the maneuverability of the tug
A、towed sideways by an overwhelming force on the towline B、her tow moves parallel to and forward on either side of the tug C、the tow is no longer directly astern but moves up on her quarter D、All of the above
A、steamer will drift stern downwind B、tug will drift faster than the steamer C、tug should approach stern to D、tug should approach from downwind
A、a mechanical breakdown on the tug B、adverse tidal current conditions C、the tug reducing its speed D、All of the above
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