In towing,heaving lines are used for().
A、A.passing a tow bridle to the tug
B、B.passing a messenger line
C、C.heaving in the tow bridle
D、D.service lines with rocket line throwers
A、A.passing a tow bridle to the tug
B、B.passing a messenger line
C、C.heaving in the tow bridle
D、D.service lines with rocket line throwers
A、lifelines B、righting strap C、sea anchor D、towing bridle
A、the last vessel in the tow B、the last vessel in the tow and it is carrying a crew C、manned,regardless of its position in the tow D、None of the above are correct