Offshore vessel design starts with the mission: installation, personnel support or cable work need different deck loads, equipment and transfer arrangements. No single equipment list fits every offshore vessel.
IMO’s IP Code adoption notice concerns industrial-personnel safety on covered ships. Confirm applicability and transitional arrangements with the authority; do not extend it automatically to small domestic support craft.
Offshore support vessels should be designed around the specific mission, loads and operating conditions.
Installation Vessel Specifications
Installation work may call for heavy lifting, positioning or jack-up capability, depending on the installation method. These are not universal features of every installation vessel.
Service Operation Vessels (SOVs)
Personnel-support vessels need transfer arrangements suited to the operation. Accommodation, motion compensation or helicopter facilities are project-dependent, not a universal SOV checklist.
Cable Laying Vessels
Cable work requires deck/storage and handling arrangements suited to the cable and installation method; positioning and burial equipment depend on the mission.
Environmental Considerations
Assess emissions, ballast arrangements and environmental obligations for the vessel and operation. A treatment plant is not automatically required for every offshore craft.
Safety and Certification
The IP Code took effect with SOLAS XV on 1 July 2024 for covered cargo ships and high-speed cargo craft of 500 GT and upwards on international voyages carrying more than 12 industrial personnel. Existing vessels have transitional provisions; personnel counting and prior authorization also matter. See the adopted SOLAS XV amendment and IP Code. Below 500 GT or on domestic voyages, confirm national requirements; the IMO instruments invite voluntary application rather than imposing universal coverage.
Future Developments
Define payloads, transfer limits and operating conditions before choosing equipment; future technology does not replace an agreed design and approval basis.
Planning Checklist
- Describe mission, payload and personnel numbers.
- Provide equipment loads, transfer method and operating conditions.
- Confirm tonnage, build date, international/domestic operation and authority basis.
For proposal-specific work, see the workboat and commercial craft design scope. Confirm the applicable rules and deliverables before commissioning analysis.
Related planning guides: Workboat and commercial ship design trends and Maritime safety: new regulations and standards.