An offshore installation has several lighting tasks: access routes, close equipment checks, open work areas and maintenance inside restricted spaces. A useful comparison starts with those tasks and the classification of each location.
Check the location before the fixture format
Use the site's classification documentation to establish the required approval. Outdoor location does not automatically mean Division 2, and a gas approval does not establish dust suitability. Temperature marking, ambient limits and exact certificate conditions remain part of the selection.
Separate general coverage from close work
Fixed or supported fixtures can cover an established work area. A hand lamp reaches around pipework and machinery; a personal light moves with the wearer. Evaluate shadows, glare and access from the actual working positions rather than comparing only total lumens.
Review salt, vibration and mounting
Check the manufacturer's environmental ratings, materials, fasteners and permitted mounting arrangement against the intended exposure. Salt spray, washdown, vibration and corrosion are distinct conditions. A wet-location rating is not proof of resistance to every offshore exposure.
Compare maintenance on realistic terms
Consider access equipment, isolation, approved replacement parts and the effort required to inspect cords and seals. Any energy or maintenance estimate should identify the specific old and new fixtures, operating hours and site assumptions. A result from another platform cannot establish this installation's outcome.
Offshore and marine lighting includes several portable formats; verify the complete configuration for the area in which it will be used.
References: OSHA 1910.307 — Hazardous (classified) locations · UL Solutions — North American hazardous-area certification · IECEx — Equipment certification questions