Crew gym on board a ship: habitability, exercise equipment and 316L stainless steel

La réglementation française d'habitabilité impose une salle destinée aux loisirs à bord des navires d'une jauge brute égale ou supérieure à 3 000 UMS. Elle recommande également de fournir gratuitement aux gens de mer des articles de sport, matériel de culture physique compris. Light In Fitness équipe ces espaces équipage en structures inox 316L adaptées à l'ambiance marine.

Maritime habitability rules require a room intended for recreation on vessels of 3,000 gross tonnage and above, and recommend that seafarers be provided free of charge with sports articles including physical training equipment from 500 gross tonnage. That distinction is the one every owner has to hold: the recreation room is mandatory above a tonnage threshold, the exercise equipment remains a recommendation. No instrument requires a gym on board, and no supplier can claim that its products are “MLC compliant”, because the convention certifies ships and employers, not equipment.

Light In Fitness manufactures 98 references in 316L stainless steel, suited to enclosed crew spaces and to open decks alike. Compact equipment starts at 1,199 euros excluding VAT for a multi adjustable bench, and a usable wall station fits in four to eight square metres.

What the rules actually say

The Maritime Labour Convention 2006 applies to merchant vessels. Warships and naval auxiliaries are expressly excluded, as are fishing vessels and inland navigation. A maritime labour certificate is required for commercially operated vessels of 500 gross tonnage and above engaged on international voyages.

Regulation 3.1 requires decent accommodation and recreational facilities. Standard A3.1, the only mandatory part, requires appropriate recreational facilities without defining their content. It is guideline B3.1.11, a recommendation rather than a requirement, that mentions physical training equipment. In French law these provisions are implemented by division 215 on habitability on board vessels; other flag states implement the same convention through their own national instruments, so check the wording of your flag administration.

Requirement	Status	Tonnage threshold
Access to one or more spaces on an open deck	Mandatory	All vessels
Library and means to read and write	Mandatory	All vessels
Sports articles including physical training equipment, provided free of charge	To be considered, recommendation	500 GT and above
Facilities for swimming, where appropriate	To be considered, recommendation	500 GT and above
Sitting room or library, and a room intended for recreation	Mandatory	3,000 GT and above

Two phrases should never appear in a technical or commercial file: “the Maritime Labour Convention requires a gym on board”, which is false, and “MLC certified equipment”, which is meaningless. The defensible wording is the table above, cited against the flag state instrument that applies to your vessel.

The addressable market under one flag

French maritime ministry statistics as at 1 July 2025 record 459 vessels above 100 GT under French flag, of which 227 transport vessels and 232 maritime service vessels. The passenger category holds 86 vessels: 51 ro-ro passenger ferries, 19 passenger vessels and 16 cruise ships.

Operator	Fleet	Context
Brittany Ferries	10 vessels under French flag	Channel and Atlantic, long crew rotations
Corsica Linea	9 vessels	Corsica and North Africa from Marseille
La Meridionale	4 vessels	Corsica and Morocco
Ponant	14 vessels	Expedition cruising, headquartered in Marseille

To those operators add cargo vessels, maritime service vessels and offshore units, where the length of a tour of duty makes the recreation space all the more important for crew recruitment and retention. Owners increasingly treat a functional crew gym as a retention measure rather than a compliance item, which changes who signs off the budget.

Designing a crew exercise space

A crew space is neither a fitness club nor a cruise ship gym. Three characteristics define it: a small floor area, daily use by a limited complement, and maintenance that must be minimal, because the crew are not maintenance technicians for gym equipment and there is no service call at sea.

Area	Configuration	Equipment	Budget excluding VAT
4 to 8 square metres	Multi purpose wall station	Wall mounted functional rig, multi adjustable bench, dumbbells	8,000 to 12,000 euros
8 to 15 square metres	Multi purpose station plus free weights	Multifunction rack, bench, dumbbell set and rack, bumper plates	12,000 to 20,000 euros
15 to 30 square metres	Complete space	Free standing rig, power rack, leg press, self powered cardio	25,000 to 45,000 euros
Open deck	Bodyweight and functional work	Pull up bar, dip bars, street workout cage	3,000 to 25,000 euros

Indicative unit prices: wall mounted stainless functional rig 5,999 euros, multi adjustable stainless bench 1,199 euros, multifunction stainless rack 4,999 euros, competition power rack 4,999 euros, stainless dumbbells from 99.99 euros for the lightest. The full range is on stainless steel outdoor fitness.

Practical layout rules at sea

Keep a clear working area in front of every station, and remember that a user loses balance in a seaway more often than ashore.
Store free weights in a rack that retains them when the vessel rolls; loose plates and dumbbells are the most common injury source in a crew gym.
Favour plate loaded and bodyweight equipment over selectorised machines where humidity is high and spares are far away.
Prefer self powered cardio: no electrical connection, no dependence on the vessel supply frequency, and the most common failure point in a salt atmosphere removed.
Site the space away from cabins where possible, or specify rubber flooring to limit structure borne noise. See rubber gym flooring tiles.

Why 316L stainless steel even in an enclosed space

An enclosed crew space on board is still a salt laden, humid atmosphere: ventilation drawn from outside air, condensation, wet working clothes brought in from the deck. Chrome plating and painted steel age badly there, and corrective maintenance has no place in the schedule of a reduced crew.

Grade 316L contains 2.0 to 2.5 per cent molybdenum under EN 10088, which grade 304 lacks. In the pitting resistance formula, PREN equals Cr plus 3.3 Mo plus 16 N, that places its index between 23.1 and 28.5, against 17.5 to 20.8 for grade 304, on values published by the British Stainless Steel Association. On an open deck, in ISO 9223 corrosivity categories C5 to CX, a zinc coating loses up to 25 microns per year, whereas stainless steel is not consumed: its passive layer reforms in the presence of oxygen, provided surfaces are washed with fresh water so that chlorides do not accumulate in sheltered corners.

The fire argument matters more in an enclosed space. Annex 2 of the FTP Code 2010 places products made solely of ordinary metals and alloys among those that may be installed without test or approval, and SOLAS regulation II-2/3 defines a non combustible material as one that neither burns nor gives off flammable vapours in sufficient quantity for self ignition at approximately 750 degrees Celsius. Upholstered parts fall under part 8 of the FTP Code, and applied surface finishes under regulation II-2/6 on smoke and toxicity. A bare stainless frame therefore simplifies the fire file considerably, which is why we recommend it even where a painted finish would look more familiar. The full technical framework is on sports equipment on board a ship.

Naval vessels

Because warships are excluded from the Maritime Labour Convention, none of its habitability requirements apply to them. The equipping logic is operational physical preparation: high usage rates, military supervision, and equipment that must survive without any on board after sales service. We have delivered street workout cages to French army units at Carcassonne, at the CFIM 6 training centre in Frejus, in Tahiti and to a joint support unit, and a stainless steel functional rig to the Finnish armed forces. Purchasing rules are covered on buying sports equipment through public tender, and for a deployable capability quayside the container gym provides a complete mobile facility.

Frequently asked questions

From what tonnage is a recreation room compulsory on board?

From 3,000 gross tonnage. Habitability rules then require a sitting room or library and a room intended for recreation. Below that threshold the obligation is limited to access to a space on an open deck and to means of reading and writing. Providing sports articles including physical training equipment is recommended from 500 gross tonnage but is not required.

Can a supplier offer MLC certified equipment?

No. The Maritime Labour Convention addresses the working and living conditions of seafarers, verified by the flag state and by port state control through the maritime labour certificate and the declaration of compliance. It provides for no product certification. A supplier can, and should, document how its equipment meets the habitability requirements applicable to your vessel.

Are naval vessels subject to these requirements?

No. Warships and naval auxiliaries are expressly excluded from the scope of the Maritime Labour Convention 2006. Requirements are set by command and follow operational physical preparation objectives, with purchasing governed by public procurement rules rather than by habitability rules.

What is the minimum usable area for a crew exercise space?

Four to eight square metres is enough for a multi purpose wall station combining bodyweight work, an adjustable bench and free weights. Below that, an open deck position remains the better option, with a pull up bar and dip bars fixed to a load bearing structure.

How is equipment fixed in a crew space?

By anchor plate to a bulkhead or deck, sized for the inertial loads adopted by the vessel classification society. We supply the mass and footprint of each reference with the quotation so that the vessel design office can validate the fixing and the effect on the loading plan. Where drilling is excluded, a raised technical floor is the usual alternative.

What maintenance should the crew expect to carry out?

Fresh water washing of all surfaces, especially those sheltered from spray, a torque check on fixings at the interval given in the manual, and inspection of any wear parts such as cables or pads. There is no repainting cycle on stainless steel, which is the main reason it suits a vessel with no dedicated maintenance capacity for gym equipment.

Studying your project

Send us the vessel, its tonnage, the area of the space and the crew complement. The quotation comes back within 24 working hours with masses, footprints and the technical information your technical department will need. Warranties run from two to five years depending on the range, with extended cover available on steel structures.

See the stainless steel outdoor fitness range, sports equipment on board a ship, after sales and spare parts, and use request a quote or call +33 6 20 72 66 96.

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