There are two classes of vessels which，to the extent necessary to carry out their work，do not have to comply with the rule regarding traffic separation schemes. One of these is a vessel（）.
A vessel the passage of which is not to be impeded（）to comply with this Rule when the two vessels are approaching one another so as to involve risk of collision.
Which vessel is the stand-on vessel when two vessels crossing in fog are NOT in sight of one another（）.
Two vessels are abreast of each other and passing port to port in a confined waterway. What should you expect as your bow approaches the screws of the other vessel? （）
Two vessels（）while they „re sailing in Huangpu River.
A vessel is described as a two compartment vessel when it（）.
When two power-driven vessels are meeting head-on and there is a risk of collision,each shall（）.
You are docking a vessel starboard side to with the assistance of two tugs.You are attempting to hold the vessel off by operating both tugs at right angles to the vessel and at full power.You must ensure that（）.
You are docking a vessel．Wind and current are most favorable when they are（）.
When two vessels are in immediate danger of collision，the stand-on vessel must（）.
Vessel towing with the current shall（）tow more than two boats and they must be towed alongside.
Two vessels meeting in a “head-on” situation are directed by the Rules to（）.
When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision，they shall be deemed to be in（）.
A vessel moored with two anchors,sometimes, at an exposed roadstead to（）.
All of the following vessels are “restricted in their ability to maneuver” EXCEPT a vessel （）.
Vessels are advised（）clear of this area.
A vessel moored with two anchors，sometimes，at an exposed roadstead to（）.
Which one of two crossing power-driven vessels has the right of way in a fog（）.
When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision,they shall be deemed to be in（）.
When vessel enters thick fog, she should sound（）every two minutes in accordance with the rules.
On which vessels are the officers and deck crew allowed to operate under a two-watch system on voyages of less than 600 miles? （）
All fog signals shall be sounded every two minutes with the exception of a vessel（）.
When two vessels are in sight of one another and NOT in or near an area of restricted visibility，any of the following signals may be given EXCEPT（）.
79. When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision, they shall be deemed to be in _____.
