The minimum length of a boat painter for a lifeboat in ocean service is().
A:60 fathoms
B:the distance from the main deck to the light waterline
C:twice the distance from the main deck to the light waterline or 50 feet whichever is greater
D:two times the distance from the boat deck to the light waterline or 50 feet whichever is greater
出自:海船船员证