Official draft measurements should be（）by authorized persons，agreed by both parties involved.

The Master or person in charge of a ship shall ensure the crane record book shows the（）.

Which part provides for transverse control and positioning of a boom in a conventional yard and stay system（）.

Running an electric winch at slow speed over a long period of time causes（）.

What is the purpose of the equalizing beam aboard a crane vessel（）.

When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.

If an attempt is made to hoist a load that exceeds the capacity of an electric winch，an overload safety device causes a circuit breaker to cut off the current to the winch motor（）.

Which statement is FALSE concerning a tagline as used with a 30-ton pedestal crane（）.

The item（）is not the advantage of the hydraulic winch．

When discharging an oil cargo，the first consideration is to（）.