A.1/3 B.1/4 C.1/2 D.2/3
A.L>λ;d/L<10% B.L>λ;d/L<5% C.L≈λ;d/L<10% D.L≈λ;d/L<5%
A.保持船首大于1/4滿載吃水,并減速 B.保持船首大于1/4滿載吃水,并加速 C.保持船首大于1/2滿載吃水,并減速 D.保持船首大于1/2滿載吃水,并加速