Life Raft Servicing and Lifespan
A life raft that hasn't been professionally serviced is a life raft you cannot trust — and the service cycle is more complex than most owners realize.
The Service Cycle — Annual, Biennial, and Manufacturer Requirements
Life rafts are unique among marine safety equipment in that they require periodic professional inspection by an authorized service station — not by the owner, not by a general marine mechanic, but by a technician trained and certified by the raft's manufacturer. This is not optional. An unserviced raft is considered unreliable by surveyors, insurers, and race inspectors, and for good reason: the materials and mechanisms inside a packed raft degrade over time in ways that are invisible from the outside.
Service intervals vary by manufacturer and raft age. Most manufacturers require servicing every 1 to 3 years, with the interval tightening as the raft ages. A typical schedule looks like this: new rafts are serviced at 3 years from manufacture, then every 2 years until the raft is 10 years old, then annually after that. Viking specifies servicing every 12 months for their recreational rafts, though some newer models allow a 2-year interval for the first service. Winslow requires servicing every 2 years for rafts under 12 years old, then annually. Switlik and Zodiac have similar schedules. Always check your specific manufacturer's requirements — the service interval is printed in the raft's documentation and on the service certificate.
Why such frequent servicing for equipment that's never used? Because the raft's inflation system, fabric, and adhesive bonds degrade with time, temperature cycling, humidity, and (for canister-mounted rafts) vibration and spray exposure. The CO2 inflation cylinder can slowly lose pressure through the valve. Adhesive bonds between fabric panels weaken with age and UV exposure (even through the canister). The survival equipment inside — flares, food rations, batteries, water — has its own expiration dates that must be tracked independently. A raft that was perfectly functional 3 years ago may have a slow inflation cylinder leak, degraded seam bonds, and expired flares today.
For racing sailors, the service certificate is a hard requirement at every pre-race inspection. ISAF/World Sailing regulations require that the raft's service certificate be current — meaning the raft has been serviced within the manufacturer's required interval and the certificate is signed by an authorized station. An expired service certificate means your raft doesn't count, period. For cruising sailors, insurance companies increasingly require proof of current raft servicing as a condition of offshore coverage. Even if no one checks, the practical reality is that an unserviced raft may not inflate, may inflate partially, or may inflate with expired survival equipment — any of which could be fatal.
Mark your raft's next service due date on your annual maintenance calendar and on the raft canister itself with a permanent marker. Service stations often have wait times of 2-6 weeks, especially in spring when every boat is being commissioned. Send your raft for servicing in the off-season (winter) to avoid delays and to ensure it's back aboard before your first sail of the year.
Some service stations offer a loaner raft program while yours is being serviced. Ask about this when you schedule service — it means you don't have to miss sailing time or go offshore without a raft while yours is in the shop. Viking's larger service stations commonly offer this, and some independent stations do as well.
What Happens During a Professional Service — The Full Teardown
Understanding what happens during a raft service helps you appreciate why it can't be done at home and why the cost is justified. A professional life raft service is a complete teardown, inspection, test, and repack of every component in the raft. The process takes a trained technician several hours for a single raft and requires specialized equipment including inflation test rigs, precision scales, and climate-controlled workshop space.
The service begins with unpacking and visual inspection of the exterior. The technician examines the canister or valise for cracks, UV damage, water ingress, and corrosion on hardware. For canister rafts, the canister halves are separated and inspected for seal integrity. The raft is then carefully unfolded and laid out on a clean floor for inspection of the main buoyancy chambers. Every square inch of fabric is examined for UV degradation (indicated by color fading and brittleness), abrasion, mildew, rodent damage, and delamination of coatings.
Seam welds and adhesive bonds receive particular scrutiny because they are the most common failure point. The technician flexes seams, checking for separation, bubbling, or cracking of the adhesive. High-frequency welded seams (used on higher-end rafts) are more durable than glued seams, but both degrade with age. Any suspect seam is marked for repair. The inflation valves and relief valves are individually tested for proper seating, seal integrity, and correct opening pressure. A relief valve that opens too early will dump gas during inflation; one that sticks closed can over-pressurize and burst a chamber.
The CO2 inflation cylinder is weighed on a precision scale and compared to the stamped weight on the cylinder body. If the cylinder weight is below the manufacturer's minimum (typically more than 10% loss indicates a slow leak), the cylinder is condemned and replaced. The firing mechanism — the painter-activated puncture device that pierces the cylinder — is inspected for corrosion, proper alignment, and spring tension. This is the mechanism that must work perfectly on the first pull; there is no second chance.
Finally, the survival equipment pack is unpacked completely. Every item is inspected and checked against its expiration date: flares (42-month expiry from manufacture), food rations, water pouches, batteries in the waterproof torch, first-aid supplies, and signaling equipment. Expired items are replaced. The sea anchor is inspected for fabric integrity and swivel function. Paddles, bailer, repair kit, and knife are checked for condition. Everything is repacked according to the manufacturer's precise folding and packing sequence — which ensures the raft deploys in the correct orientation and inflates in the correct order when the painter is pulled.
Ask the service station for photographs of the teardown — many stations routinely document the condition of each raft they service, and these photos give you an honest assessment of your raft's remaining life. If the technician notes areas of concern that are still within tolerance, those photos help you plan for eventual replacement.
Finding Authorized Service Stations
Not every marine service shop can service a life raft. Authorized service stations are trained and certified by specific raft manufacturers, and they carry the tooling, replacement parts inventory, and workshop facilities required to perform a proper service. Using an unauthorized shop — or worse, attempting a DIY service — voids the manufacturer's warranty, invalidates the service certificate, and may result in a raft that is improperly repacked and fails to deploy correctly.
Finding your nearest authorized station is straightforward but varies by manufacturer. Viking maintains the largest global network, with stations in most major cruising destinations — check the Viking website's service station locator. Winslow's service network is concentrated in the United States, with authorized stations on both coasts and some Gulf locations; their website lists current authorized facilities. Switlik's service network is primarily U.S.-based. Zodiac's service stations are concentrated in Europe and former French maritime territories. If you cruise internationally, consider the service station accessibility of your raft manufacturer before purchasing — a raft that can't be serviced locally may need to be shipped, which adds cost, time, and risk of damage.
SOLAS-certified service stations are facilities approved to service rafts on commercial vessels under international maritime regulations. These stations meet a higher standard of inspection and oversight than recreational-only stations. Some cruising sailors prefer to use SOLAS-certified stations even for recreational rafts, reasoning that the additional oversight provides an extra layer of quality assurance. However, SOLAS stations may charge higher rates and may prioritize commercial vessel work during busy periods.
When you deliver your raft for service, bring all documentation: the original service certificate (or the most recent one), the raft's serial number and manufacturer details, and any notes about specific concerns (e.g., the canister was exposed to a particularly harsh UV environment, or you noticed moisture inside the canister). The service station will provide a new service certificate upon completion, documenting every test performed, every item replaced, and the next service due date. Keep this certificate aboard the vessel — it's required for race inspections and may be needed for insurance claims.
Plan for turnaround times of 2-6 weeks, longer during spring commissioning season. Many stations operate on a first-in, first-out basis and do not offer rush service. If your raft needs significant repairs — fabric patching, seam re-welding, or cylinder replacement — the timeline extends accordingly. Some stations will contact you if they find issues that significantly affect cost, giving you the option to authorize repairs or discuss replacement.
If you're planning a long-distance cruise, schedule your raft service at a port along your route where an authorized station exists. This avoids the cost and hassle of shipping the raft back to your home port. Viking and Zodiac stations in the Caribbean, Mediterranean, and South Pacific routinely service cruisers' rafts. Confirm the station is still active and has parts for your specific model before you arrive.
Cost of Servicing vs Replacement — The Economic Calculus
Life raft servicing is not cheap, and as a raft ages, each service visit becomes more expensive as more components need replacement. Understanding the economics helps you make rational decisions about when to keep servicing an aging raft and when to invest in a replacement. The math is not always obvious, and many owners spend more on servicing over a raft's life than the raft originally cost.
Typical service costs for a recreational offshore raft range from $300 to $800 per visit for a straightforward inspection with no major repairs. This base cost covers the technician's time, basic consumables (replacement flares, expired food/water, batteries), and repacking. If the CO2 cylinder needs replacement, add $150-$400 depending on cylinder size. If seam repairs are needed, add $200-$500+ depending on extent. If the inflation valve or relief valves need service, add $100-$300. A service visit that uncovers significant fabric degradation, multiple valve issues, and a condemned cylinder can easily exceed $1,200-$1,500 — approaching half the cost of a new coastal raft.
New raft prices span a wide range: a basic 4-person coastal raft (Switlik, Zodiac) runs $1,500-$2,500. A 4-person offshore raft with ISAF approval (Winslow Super-Light) costs $3,500-$5,500. A 6-person Viking RescYou Pro with SOLAS A-pack in a canister runs $5,000-$8,000+. Larger capacity rafts and premium equipment packs push prices higher. When a single service visit on a 12-year-old raft costs $1,500 and the technician notes that the fabric is approaching end-of-life, the question becomes: do you spend $1,500 now plus another $800 next year on a raft that may fail its next inspection, or do you invest $4,000-$6,000 in a new raft with a fresh 10-15 year lifespan?
A useful rule of thumb: when a single service visit costs more than 25% of the replacement cost of an equivalent new raft, it's time to seriously consider replacement. Also factor in the value of a fresh lifespan — a new raft resets the clock on fabric degradation, adhesive aging, and component wear. You're buying 10-15 years of reliable service life, not just passing the next inspection. For boats that are regularly sailed offshore, the peace of mind of a modern raft with current technology, fresh materials, and a full service life ahead is worth the investment.
Some owners try to extend the interval between services to reduce costs. This is false economy. A raft that fails its service inspection due to deferred maintenance may require more expensive repairs than it would have needed with timely servicing. Worse, a raft with expired certification may not be covered by insurance in a casualty, and it certainly won't pass a race inspection. The service schedule exists because the manufacturer knows how their materials and components degrade. Follow it.
Never purchase a used life raft without a current service certificate and full documentation of its service history. A used raft with unknown service history is essentially a gamble — the fabric may be degraded, the inflation cylinder may be underweight, and the equipment pack may be expired. The cost of a professional service to verify condition often approaches the cost of the used raft itself, and if the raft fails inspection, you've wasted the service fee plus the purchase price.
End of Life — When to Retire a Raft
Every life raft has a finite lifespan, and knowing when your raft has reached end-of-life is as important as keeping it serviced during its useful years. Continuing to service a raft past its practical lifespan wastes money and — more critically — gives you a false sense of security. The raft in the canister on your cabin top needs to actually work when you need it, and an aged raft may look fine in its canister while harboring fabric degradation, weakened bonds, and compromised inflation components that no amount of servicing can reverse.
Manufacturer-specified lifespans vary but generally fall in the 10-15 year range for recreational rafts. Viking rates their recreational rafts for 12-15 years depending on model and storage conditions. Winslow specifies 12 years for their standard models. Some SOLAS commercial rafts have even shorter specified lifespans. These numbers represent the manufacturer's assessment of how long the materials will maintain acceptable strength and integrity under normal storage conditions — which assumes the raft is stored in a reasonable environment, not baking in tropical sun on an uncovered deck.
Signs of end-of-life that a service station will identify include: fabric that has become brittle or lost its flexibility, delamination of the inner coating (which provides gas-tightness), widespread adhesive degradation at seams (not just a single repair but systemic failure across multiple seams), chronic valve leakage that returns shortly after repair, and floor fabric that has lost structural integrity. When the technician's report starts reading like a litany of problems rather than a clean bill of health, the raft is telling you it's done.
UV damage is the primary life-shortening factor for canister-mounted rafts, even though the canister provides significant protection. UV radiation penetrates fiberglass canister walls to a degree, and heat buildup inside the canister accelerates fabric and adhesive degradation. Rafts stored in valises inside climate-controlled spaces last longer than deck-mounted canisters in tropical climates. If your boat lives in the tropics or spends most of its time in direct sun, expect your raft's practical lifespan to be at the shorter end of the manufacturer's range. Conversely, a raft stored in a valise in a temperature-controlled locker on a boat kept in a temperate climate may exceed the manufacturer's stated lifespan while still passing inspections.
When you retire a raft, the canister and cradle hardware may be reusable if you're replacing with the same manufacturer and size. The old raft itself must be disposed of properly — the CO2 cylinder is a pressurized vessel and the pyrotechnics in the equipment pack are hazardous materials. Most service stations will accept old rafts for disposal as part of a replacement purchase. Some stations will deploy the old raft for you as a training exercise — an invaluable opportunity to practice boarding and using a life raft in controlled conditions. If your station offers this, take advantage of it. Deploying a real raft in the water is an experience every offshore sailor should have before they need to do it in earnest.
When replacing an end-of-life raft, ask the service station to deploy the old raft for a crew training exercise before disposal. Seeing a real raft inflate, boarding from the water, and spending time inside the raft gives your crew practical experience that no amount of reading can provide. This is especially valuable if you've never deployed a raft before — the inflation is violent, the raft is unstable until loaded, and the boarding process is physically demanding.
Summary
Life rafts require professional servicing at manufacturer-specified intervals (typically every 1-3 years, tightening to annual as the raft ages) by authorized service stations — this is not optional for racing, insurance, or reliable function.
A full service involves complete teardown, inflation testing, seam inspection, CO2 cylinder weighing, valve testing, and survival equipment replacement — a process that takes hours and requires specialized facilities.
Service costs range from $300-$800 per routine visit, escalating as the raft ages and more components need replacement — when a single service exceeds 25% of replacement cost, consider a new raft.
Most recreational rafts have a 10-15 year practical lifespan, shortened by UV exposure, heat, and harsh storage conditions — manufacturer end-of-life dates should be treated as hard limits.
Keep your service certificate aboard the vessel at all times — it's required for race inspections, insurance documentation, and proof of compliance.
When retiring an old raft, request a deployment training exercise — practicing raft boarding in controlled conditions is invaluable experience for offshore crews.
Key Terms
- Service Certificate
- The document issued by an authorized service station after a professional life raft inspection, recording all tests performed, items replaced, and the next service due date. Required for racing inspections and insurance compliance.
- CO2 Inflation Cylinder
- A high-pressure gas cylinder containing carbon dioxide that inflates the life raft when the firing mechanism is activated. Weighed during service against its stamped weight to detect slow leaks — replacement required if weight loss exceeds the manufacturer's tolerance.
- Seam Weld
- The bond joining fabric panels in a life raft, created by high-frequency welding or adhesive bonding. The most common failure point in aging rafts, inspected by flexing and visual examination during every service.
- Relief Valve
- A pressure-release valve on each buoyancy chamber that opens if internal pressure exceeds safe limits during inflation or temperature expansion. Must open at the correct pressure — too low and the chamber stays soft, too high and the chamber can burst.
- Firing Mechanism
- The painter-activated device that punctures the CO2 cylinder to begin raft inflation. Inspected for corrosion, alignment, and spring tension during service — this mechanism must function on the first activation with no second chance.
- Authorized Service Station
- A facility trained, certified, and equipped by a specific raft manufacturer to perform professional inspections and servicing. Using an unauthorized facility voids the warranty and invalidates the service certificate.