Name various statutory certificates and documents to be carried on board a Special Trade Passenger Ship trading in Indian coastal waters, giving reference to the conventions and justify their requirement.

A "Special Trade Passenger Ship" (STP) - a passenger ship carrying more than a prescribed number of passengers on special trade voyages (e.g. the Indian coastal pilgrim/gulf voyages), typically governed by the Special Trade Passenger Ships Rules (and the STP Code for such ships > a certain size) in addition to the normal SOLAS requirements - requires the following statutory certificates/documents:

1. International Tonnage Certificate (ITC '69) - IMO Tonnage 1969.
2. Certificate of Registry and Certificate of Sea-worthiness (Indian Merchants Shipping Act).
3. International Load Line Certificate (including any load line) - LL 66.
4. Passenger Ship Safety Certificate (SOLAS Reg I/12 & II-2) - for a special trade passenger ship, the applicable passenger certificate. Optionally the "Certificate for Special Trade Passenger Ship"/ "STP Certificate" under the STP Rules (which includes a certificate under the special trade passenger ship code). Justification: certifies survivability, subdivision/stability, fire safety and lifesaving for passenger carriage.
5. Cargo Ship Safety Equipment, Safety Construction and Safety Radio Certificates - where applicable (SOLAS).
6. International Oil Pollution Prevention Certificate (IOPPC) - MARPOL I.
7. International Sewage Pollution Prevention Certificate (ISPPC) - MARPOL IV.
8. International Air Pollution Prevention Certificate (IAPPC) - MARPOL VI.
9. International Energy Efficiency Certificate (IEEC) - MARPOL VI.
10. International Ballast Water Management Certificate (BWMC) - BWM.
11. Anti-fouling System Certificate/Declaration - AFS.
12. ISM DOC and SMC - ISM.
13. International Ship Security Certificate (ISSC) - ISPS (SOLAS XI-2) if applicable.
14. Minimum Safe Manning Certificate - SOLAS/flag.
15. SOPEP - MARPOL I.
16. Garbage Management Plan and Record Book - MARPOL V.
17. Medical certificates, MLC 2006 - MLC Certificate and DMLC (for seafarers).
18. STCW certificates/endorsements for crew - STCW.
19. Radio licence and GMDSS Certificates - SOLAS IV.
20. Stability book/information and "for the STP ship, the STP-specific documents": the certified stability/survey, the passenger certificate/STP plate, the class/RO certificate, and where required the "Plimmer" and safe manifest; the fire control plan; muster list; the VDR/S-VDR if applicable.

Justification (general): each certificate evidences compliance with the respective international convention (tonnage, load line, safety construction/equipment/radio, MARPOL annexes, ISM/ISPS, MLC) protecting life, property and the environment; on a passenger ship, the passenger safety certificate and stability/subdivision/escape provisions are paramount; the certificates are also inspected by the Indian Mercantile Marine Department and port State control to ensure the vessel may lawfully trade and the crew/passengers are safe. (For STP ships, the applicable code - the "Special Trade Passenger Ships" (STP) rules under the Merchant Shipping Act and IMO Resolution A.xxx.-adopted STP Code - imposes additional requirements on fire/escape/lifesaving for large passenger carriage which are certified in the STP certificate and the survey.