单项选择题
The Oil Record Book must be maintained onboard the vessel for （）.
A.not less than 3 years and be readily available for inspection B.6 months and then submitted to the nearest Marine Safety Office for review C.an annual inspection D.the duration of the ships active employment
单项选择题 Which of the following operations aboard a tanker must be recorded in the Oil Record Book（）.
单项选择题 For an upright vessel, draft is the vertical distance between the keel and the （）.
单项选择题 Which of the following machinery space operations is required to be logged in the Oil Record Book?（）
