1. types of threads
2.types of taps and dyes.
3.MARPOL Annex VI
4.SOLAS Chapter XII 
5. p-v valve & p-v breaker settings
6. alarms and trips of boiler and IG system
7.fixed ire fighting system
8.EEBD/SCBA checks and operation
etc etc etc... 
few answers............
all suction pipe end will be bell mouthed to reduce the effect of vortex formation ,when the liquid level is very low so that air is not sucked into the system and thus avoids loosing suction which helps in stripping . 
four stroke engine speed is very high compared to a low speed two stroke engine and hence it is difficult to take an indicator diagram using traditional indicator card, but with modern technologies like piezo electric based indicator drawing device we can take indicator diagram of four stroke engines also. 
indicated pressure is the instantaneous pressure inside a cylinder or in an indicator diagram the pressure at any crank angle

HEN VSL IS IN PORT, V R CIRCULATING FUEL FOR M/E BUT Y FLOWMETER IS NOT TURNING.

HOW FO CICULATED, ITS ABT CONTRUCTION DEATILS OF FUEL INJECTOR.

WHT IS VIT,

HOW SULZER FUEL PUMP IS WORKING.

Y WE NEED SEPERATE CAMSHAFT LO SYSTEM FOR M/E.

WHT IS THE MAX PERM. WEAR RING CLEARANCE.

HOW AIR DRIER IS WORKING, Y V USE 7KG AIR FOR CONTROL SYSTEMS.

WHT IS FLAME EYE IN BOILER, HOW IT IS WORKING.

WHT IS THE USE OF RELIEF VALVE IN FWG, Y V NEED TWO BOILER SIDE BOLWDOWN VALVES.

IF ONE OF M/E UNIT IS FIRING, WHICH ALARM U LL GET.

WHT IS K VALVE IN T/C. IF K IS MORE N LESS --- WHT IS THE PROBLEM.

HOW LL U TEST AIR STARTING VALVES, 1 WHEN ENGINE IS RUNNIG N 2 NOT RUNING