To work on board tanker vessel as Engineer Officer ;

Here is requirements according to the new law as amended 2010:

CDC (In good order, without Damage, Should be endorsed with ILO stamp)

Yellow Fever

COC

Oil DCE

Chem DCE

Gas DCE (if on gas tanker) 

PST (as per STCW 2010)

PSCRB (as per STCW 2010)

AFF (as per STCW 2010)

MFA (as per STCW 2010)

Medical Care (For Masters) (as per STCW 2010)

PSSR (as per STCW 2010)

SSO (Mandatory for Senior Deck Officers) (as per STCW 2010) or CPSDSD (as per STCW 2010)

TASCO (Specialised Tanker training OIL)

CHEMCO (Specialised Tanker training CHEM)

Engine Room Management

Flag State Docs

Medical (ILO, D/A, LFT, FLAG Mediclas)

Passport (With at least 6 Blank pages, machine readable, no handwritten and no 20 yrs. validity)