（）length of the ship measured from ext

1、The structural members of the hull ext

The structural members of the hull extending in a fore and aft direction are called （）.AframesBjoinersClongitudinalsDknee

2、The length of a wave is the length（）.

The length of a wave is the length（）.Aof the wave's crestBof the wave's troughCmeasured from crest to troughDmeasured from crest to crest

3、The length of chain between the anchor

The length of chain between the anchor and the end of the pendant line is called the（）.Apigtail chainBthrash chainCcrown chainDwear chai

4、Ullage measurements are taken from the

Ullage measurements are taken from the top of the liquid to（）.Athe base of the expansion trunkBthe base of the ullage portCa line scribed within the ullage portDan above-deck datum，usually the top of the ullage hole

5、Freeboard is measured from the upper e

Freeboard is measured from the upper edge of the（）.AbulwarkBdeck lineCgunwale barDsheer strake

6、The length of the steering oar in a li

The length of the steering oar in a lifeboat is（）.Ashorter than the rowing oarsBthe same length as the rowing oarsClonger than the rowing oarsDunrelated to the length of the rowing oar