One of the most common questions I get from captains and chief engineers taking over a new vessel is some variation of: “What documents am I actually supposed to have onboard?” It sounds like it should have a simple answer. It doesn’t.
Superyacht documentation requirements span multiple international conventions, flag state codes, classification society rules, and port state expectations. Miss one document and you might sail for years without anyone noticing. Miss the wrong one and you get detained in port with a PSC deficiency that takes weeks to resolve.
This guide is the checklist I wish I’d had when I first stepped onboard as chief engineer. It covers every major document category, organised by the convention or code that requires it, with the GT thresholds and applicability notes you need to determine what’s mandatory for your vessel.
MARPOL Documents
The International Convention for the Prevention of Pollution from Ships (MARPOL) is where the bulk of your environmental documentation requirements come from. Each annex has its own document requirements.
MARPOL Annex I — Oil Pollution Prevention
| Document | Requirement | Applicability |
|---|---|---|
| International Oil Pollution Prevention Certificate (IOPP) | Mandatory | All vessels 400GT+ |
| Oil Record Book Part I (machinery spaces) | Mandatory | All vessels 400GT+ |
| Shipboard Oil Pollution Emergency Plan (SOPEP) | Mandatory (Reg 37) | All vessels 400GT+ |
| Oil spill equipment inventory | Mandatory (part of SOPEP) | All vessels 400GT+ |
The IOPP certificate is issued by your classification society on behalf of the flag state and is renewed every five years with an intermediate survey. The Oil Record Book is an ongoing record — every oil transfer, discharge, or disposal must be logged. Your SOPEP is the emergency response plan for pollution incidents, and it must be approved by the flag state.
MARPOL Annex II — Noxious Liquid Substances
Most superyachts don’t carry NLS cargo, so Annex II documentation requirements are limited. However, if your vessel carries any Annex II substances in bulk (unlikely but not impossible for certain cleaning or maintenance chemicals), you’ll need a Procedures and Arrangements Manual and a Cargo Record Book. For the vast majority of yachts, this annex doesn’t apply.
MARPOL Annex IV — Sewage
| Document | Requirement | Applicability |
|---|---|---|
| International Sewage Pollution Prevention Certificate (ISPPC) | Mandatory | All vessels 400GT+ or certified to carry 15+ persons |
| Sewage Management Plan | Recommended / Flag-dependent | All vessels with sewage treatment plant |
The ISPPC confirms your sewage treatment plant or holding tank arrangement meets Annex IV standards. Increasingly, flag states and port states in sensitive areas (Mediterranean, Baltic, US waters) are asking for a documented sewage management plan even where it’s not strictly mandatory under MARPOL. It’s good practice to have one regardless.
MARPOL Annex V — Garbage
| Document | Requirement | Applicability |
|---|---|---|
| Garbage Management Plan | Mandatory (Reg 10.2) | All vessels 100GT+ |
| Garbage Record Book | Mandatory (Reg 10.3) | All vessels 400GT+ and certified to carry 15+ persons |
| Garbage placard | Mandatory (Reg 10.1) | All vessels 12m+ |
The Garbage Management Plan is one of the most commonly missing documents on yachts under 400GT. Regulation 10.2 applies to all vessels of 100GT and above — a threshold that catches a lot of yachts whose operators assume MARPOL documentation only kicks in at 400GT. The Garbage Record Book must record every garbage discharge or delivery to reception facilities, with entries retained for two years.
MARPOL Annex VI — Air Pollution
| Document | Requirement | Applicability |
|---|---|---|
| International Air Pollution Prevention Certificate (IAPP) | Mandatory | All vessels 400GT+ |
| Ship Energy Efficiency Management Plan (SEEMP) | Mandatory (Reg 26) | All vessels 400GT+ |
| Bunker Delivery Notes | Mandatory (Reg 18) | All vessels, retained 3 years |
| Engine International Air Pollution Prevention Certificate (EIAPP) | Mandatory | Each diesel engine 130kW+ installed after 2000 |
| Ozone Depleting Substances record | Mandatory (Reg 12) | All vessels with ODS-containing equipment |
The SEEMP is a relatively recent requirement that catches out older vessels. Since 2013, every vessel of 400GT and above must carry a SEEMP. For yachts of 5,000GT and above, SEEMP Part III requires fuel oil consumption data collection and reporting — though this threshold excludes most superyachts. The IAPP certificate covers your main engines, generators, and incinerator (if fitted).
ISM Code Documents
The International Safety Management Code applies mandatorily to vessels of 500GT and above engaged on international voyages (SOLAS Chapter IX). Below 500GT, flag state yacht codes impose equivalent requirements.
| Document | Requirement | Applicability |
|---|---|---|
| Safety Management System Manual | Mandatory | All commercial yachts 24m+ |
| Document of Compliance (DOC) | Mandatory (ISM Code 13) | Company operating vessels 500GT+ |
| Safety Management Certificate (SMC) | Mandatory (ISM Code 13) | Vessels 500GT+ |
| Designated Person Ashore (DPA) appointment | Mandatory | All vessels with SMS |
| Emergency preparedness procedures | Mandatory (ISM Code 8) | All vessels with SMS |
| Internal audit records | Mandatory (ISM Code 12) | All vessels with SMS |
| Management review records | Mandatory (ISM Code 12) | All vessels with SMS |
| Non-conformity and corrective action records | Mandatory (ISM Code 9) | All vessels with SMS |
For yachts under 500GT operating under flag state yacht codes (Red Ensign Group, Marshall Islands, Malta), you won’t have a DOC or SMC. But you still need the SMS manual and all supporting documentation. This is the “mini-ISM” approach — the content requirements are the same, the certification regime is different.
The SMS manual must address all 12 elements of the ISM Code: general provisions, safety and environmental policy, company responsibilities, designated persons, master’s responsibility, resources and personnel, shipboard operations, emergency preparedness, non-conformity reporting, maintenance, documentation control, and verification.
ISPS Code Documents
The International Ship and Port Facility Security Code applies to vessels of 500GT and above engaged on international voyages.
| Document | Requirement | Applicability |
|---|---|---|
| Ship Security Plan (SSP) | Mandatory | Vessels 500GT+ on international voyages |
| International Ship Security Certificate (ISSC) | Mandatory | Vessels 500GT+ on international voyages |
| Continuous Synopsis Record (CSR) | Mandatory | Vessels 500GT+ |
| Ship Security Assessment | Mandatory (as basis for SSP) | Vessels 500GT+ |
| Security drill and exercise records | Mandatory | Vessels 500GT+ |
| Declaration of Security (DoS) records | As required | When requested by port facility |
Yachts under 500GT are generally exempt from ISPS unless a specific flag state extends the requirement. However, if you’re calling at ISPS-regulated port facilities (most commercial ports and marinas handling vessels 500GT+), you may be asked security-related questions even if you’re technically exempt. Some owners of sub-500GT yachts choose to implement a voluntary security plan as good practice.
SOLAS Documents
The International Convention for Safety of Life at Sea generates the largest single category of vessel certificates and documentation requirements.
| Document | Requirement | Applicability |
|---|---|---|
| Safety Equipment Certificate (SEC) | Mandatory | Vessels 500GT+ on international voyages |
| Safety Construction Certificate (SCC) | Mandatory | Vessels 500GT+ on international voyages |
| Safety Radio Certificate (SRC) | Mandatory | Vessels 500GT+ on international voyages |
| International Load Line Certificate (ILLC) | Mandatory | Vessels on international voyages |
| International Tonnage Certificate (ITC 1969) | Mandatory | Vessels on international voyages |
| Minimum Safe Manning Document | Mandatory | All vessels |
| Fire Safety Systems maintenance records | Mandatory (SOLAS II-2) | All vessels |
| Lifesaving appliance maintenance records | Mandatory (SOLAS III) | All vessels |
| Navigation equipment maintenance records | Mandatory (SOLAS V) | All vessels |
| Damage control plan | Mandatory (SOLAS II-1) | Vessels 500GT+ |
| Fire control plan | Mandatory (SOLAS II-2) | All vessels |
For yachts under 500GT operating under flag state yacht codes (such as the REG Large Yacht Code LY3), the standard SOLAS certificates are replaced by the flag state’s yacht compliance certificate. The underlying safety requirements are equivalent but administered through the yacht code framework rather than SOLAS directly.
Don’t overlook the maintenance and service records. Liferaft servicing certificates, EPIRB registration and battery expiry dates, fire extinguisher service records, and fixed fire suppression system inspection records are all checked during survey. A missing liferaft servicing certificate is a detainable deficiency.
MLC Documents
The Maritime Labour Convention 2006 applies to all commercially operated vessels.
| Document | Requirement | Applicability |
|---|---|---|
| Maritime Labour Certificate (MLC Certificate) | Mandatory | Commercial vessels 500GT+ on international voyages |
| Declaration of Maritime Labour Compliance (DMLC) Parts I & II | Mandatory | Commercial vessels 500GT+ |
| Seafarer Employment Agreements (SEAs) | Mandatory | All commercial vessels with crew |
| Crew wage accounts and records | Mandatory | All commercial vessels |
| Hours of work and rest records | Mandatory (MLC Standard A2.3) | All commercial vessels |
| Crew certificates and qualification records | Mandatory | All commercial vessels |
| Onboard complaint procedures | Mandatory (MLC Standard A5.1.5) | All commercial vessels |
| Food and catering inspection records | Mandatory (MLC Standard A3.2) | All commercial vessels |
For yachts under 500GT, the MLC Certificate and DMLC aren’t required, but the substantive requirements around crew employment, working hours, and living conditions still apply. Flag state yacht codes incorporate MLC principles, and PSC officers in MLC-signatory states can inspect any foreign-flagged commercial vessel for compliance with crew welfare standards regardless of size.
The Seafarer Employment Agreement is the single most important crew document. Every crew member on a commercially operated yacht must have a written SEA that meets MLC requirements. This is non-negotiable and a common PSC finding on superyachts.
STCW Documents
The International Convention on Standards of Training, Certification and Watchkeeping for Seafarers establishes crew qualification requirements.
| Document | Requirement | Applicability |
|---|---|---|
| Crew certificates of competency | Mandatory | All watchkeeping officers and ratings |
| STCW endorsements (flag state recognition) | Mandatory | All crew on flag state register |
| Basic safety training certificates (STCW VI/1) | Mandatory | All crew |
| Advanced firefighting certificates (STCW VI/3) | Mandatory | Officers with fire duties |
| Medical first aid / medical care certificates | Mandatory | As per manning requirements |
| Training record books | Recommended | All crew |
| Familiarisation training records | Mandatory (STCW A-VI/1) | All crew upon joining |
Every crew member’s certificates must be valid, endorsed by the flag state, and originals carried onboard. Photocopies are not acceptable for survey purposes. The familiarisation training record — documenting that each crew member has been briefed on vessel-specific safety equipment, procedures, and emergency duties — is increasingly scrutinised during both flag state surveys and PSC inspections.
For yachts operating under the REG, the STCW requirements are supplemented by the yacht-specific qualifications framework, including the Officer of the Watch (Yacht) and Master (Yacht) certificates.
Additional Documents
Beyond the convention-based requirements, several other documents are either mandatory under specific regulations or expected as industry best practice:
| Document | Requirement | Applicability |
|---|---|---|
| Certificate of Registry | Mandatory | All vessels |
| Classification certificates (hull, machinery) | Mandatory | All classed vessels |
| Insurance certificates (P&I, H&M) | Mandatory | All vessels |
| Radio licence | Mandatory | All vessels with radio equipment |
| Biofouling Management Plan | Mandatory in certain jurisdictions | Vessels trading to Australia/NZ, increasingly global |
| Ballast Water Management Plan | Mandatory (BWM Convention) | Vessels with ballast tanks |
| Noise and Vibration Management records | Recommended / MLC-related | Commercial vessels |
| Lifting gear register and certificates | Mandatory (flag state regs) | Vessels with cranes, davits, lifting equipment |
| Refrigerant log | Mandatory (MARPOL Annex VI / EU F-Gas) | Vessels with refrigerant-containing equipment |
The Biofouling Management Plan deserves special attention. Originally driven by Australian and New Zealand biosecurity requirements, biofouling management is becoming a global expectation. The IMO guidelines in MEPC.207(62) aren’t mandatory under an international convention yet, but several jurisdictions enforce local requirements, and class societies increasingly expect a documented plan.
GT Thresholds: Quick Reference
Understanding where the GT thresholds fall is essential for knowing which documents apply to your vessel.
| Threshold | Key Documents Required |
|---|---|
| All vessels | Certificate of Registry, insurance, radio licence, crew certificates |
| 12m+ | Garbage placard (MARPOL Annex V) |
| 24m+ commercial | SMS/Mini-ISM (flag state yacht codes) |
| 100GT+ | Garbage Management Plan (MARPOL Annex V Reg 10.2) |
| 400GT+ | IOPP Certificate, Oil Record Book, SOPEP, IAPP Certificate, SEEMP, ISPPC, Garbage Record Book |
| 500GT+ | Full ISM (DOC + SMC), ISPS (SSP + ISSC), SOLAS certificates, MLC Certificate, CSR, damage control plan |
| 5,000GT+ | SEEMP Part III fuel data collection, enhanced survey programme |
Organising Your Documentation
Having all the right documents is one thing. Being able to find them when a surveyor asks is another.
A practical documentation structure that works well onboard:
- Certificates binder — all vessel certificates, class certificates, insurance, registry
- MARPOL binder — SOPEP, Garbage Management Plan, SEEMP, record books, bunker delivery notes
- SMS manual — the complete Safety Management System with forms and records
- Security plan — SSP and related security documentation (if applicable)
- Crew documentation — SEAs, certificates, training records, hours of rest, familiarisation records
- Maintenance records — PMS records, equipment service certificates, lifting gear register
Keep originals onboard and electronic copies backed up ashore. When a surveyor asks for a document, you should be able to produce it within minutes, not hours.
The Bottom Line
Superyacht documentation requirements are extensive, but they’re logical once you understand the convention framework behind them. The key is knowing which GT thresholds your vessel crosses, whether you’re operating commercially or privately, and what your specific flag state expects on top of the international minimums.
If you’re taking over a new vessel, start with the certificates binder and work through this checklist systematically. Identify any gaps before the next survey, not during it. And keep everything current — an expired certificate is the same as a missing certificate in the eyes of PSC.
Building or updating your vessel’s compliance documentation? Browse our complete range of professional maritime document templates — from SOPEP and Garbage Management Plans to full SMS packages, each designed specifically for superyachts and built to pass flag state survey.
Related Templates
Garbage Management Plan
MARPOL Annex V compliant Garbage Management Plan for superyachts. A professional package with GMP template, companion guide, quick reference card, garbage record book, waste segregation guide, and laminate-ready crew placards in multiple sizes. Designed to meet all major flag state requirements.
Mini-ISM Safety Management System
Mini-ISM Safety Management System manual template for superyachts under 500GT. Designed for flag state yacht code SMS requirements. Professional package with SMS manual template, companion guide, implementation checklist, crew brief, and quick reference cards. Survey-proven across Red Ensign Group, Marshall Islands, and Malta.
SMS Essentials Package
Complete Safety Management System documentation for superyachts. A 12-document ISM Code compliant package with manual, companion guide, 13 forms, 6 quick reference cards, and implementation checklist. Survey-proven across Red Ensign Group, Marshall Islands, and Malta flag states.
SOPEP Template
Shipboard Oil Pollution Emergency Plan template for superyachts. An 8-file professional package covering MARPOL Annex I Regulation 37 requirements, with companion guide, reporting forms, coastal state contacts, and equipment inventory. Designed to meet all major flag state requirements.
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