How Long Do Pneumatic Fenders Last?

A mould-type pneumatic fender in normal marine service typically lasts about 15 years, based on JettyGuard’s field experience with its own mould-process fenders. This is a manufacturer experience figure, not a service life defined by ISO 17357 or any other standard.

No published standard states a fixed service life for pneumatic fenders. ISO 17357-1:2014 sets performance and durability requirements — including a durability test of at least 3,000 compression cycles at rated deflection with no cracks and no loss of energy absorption (ISO 17357-1:2014, §8.4) — but it does not assign a service-life figure in years. PIANC WG 211 (2024) likewise treats fender design life as project-specific and calls for a regular inspection and maintenance plan, with visual inspection typically annual (PIANC WG 211, §4.5), rather than quoting a fixed number of years.

Do not confuse the fifteen-year field figure with the ten-year interval in ISO 17357-1:2014. The ten years is the period after which the manufacturer must repeat the prototype fender test to keep the design’s certification valid (ISO 17357-1:2014, §8.1) — it concerns the design certificate, not the operational life of a delivered fender.

Actual field life varies with duty. A fender at a sheltered berth with a few operations a month and disciplined maintenance can exceed the typical figure; a fender run hard, stored deflated, or left without pressure checks can fall well short.

Service life vs. warranty: these are not the same. Warranty covers manufacturing defects for a defined period from delivery and is agreed per contract. Service life is the operational lifespan under real maintenance conditions. JettyGuard does not publish a fixed warranty period in web content — contact us for project-specific contract terms.

For the sizing and deflection factors that affect service life from the outset, see the pneumatic fender overview.

The main factors that shorten pneumatic fender service life are UV and ozone exposure, chronic overdeflection beyond rated capacity, surface abrasion from hull or dock contact, and missed pressure inspections. Each works through a distinct degradation mechanism, so each has a specific mitigation.

The two highest-risk factors in high-tempo duty are overdeflection and missed pressure checks. A fender at correct pressure has a predictable deflection curve; an underinflated one can exceed rated deflection on every operation without the crew noticing.

ISO 17357-1:2014 §8.4 durability testing validates the design under at least 3,000 rated-deflection cycles with no cracking and no loss of energy absorption — but that test assumes correct inflation. Operating off-spec puts the fender outside the conditions the test validated.

Mould-type (mould-process) pneumatic fenders tend to last longer in high-cycle service than hand-wrapped ones because the rubber body is formed and vulcanised as a single integrated shell, which avoids the layer-separation failure mode that can develop in wrapped construction. This is JettyGuard’s engineering position based on production and field experience — mould vs. wrapped is a manufacturing-process distinction, not an ISO 17357 fender type.

It is important not to confuse two different classifications:

• Manufacturing process — mould vs. hand-wrapped. How the rubber body is built. In mould-process construction the body is cured in a mould as one shell. In hand-wrapped construction, rubber sheet is wrapped in plies around a mandrel and vulcanised; the plies are bonded but remain discrete layers, and under sustained dynamic loading inter-ply separation can begin at stress concentration points. This distinction is not defined by ISO 17357.
• ISO 17357 fender type — Type I vs. Type II. This is about the protection and suspension system, not the manufacturing process (ISO 17357-1:2014, §4.1):
• Type I — net-type: the fender body is covered by a chain net, wire net, or fibre net, usually with tyres or rubber sleeves for extra protection.
• Type II — sling-type: no net; each end carries a lifting device connected by a guy-chain or guy-rope, and the fender body itself is the contact surface.

Both mould-type and hand-wrapped fenders can be supplied as Type I or Type II, and both must meet the same ISO 17357-1:2014 performance and durability requirements, including the §8.4 durability test (≥3,000 cycles, no cracking, no energy-absorption loss). The durability test is a controlled prototype test; it does not reproduce the variable loading angles, partial deflections, and thermal cycling of a decade of field operation. In demanding, high-frequency service, a mould-process body’s monolithic shell is more resistant to the progressive ply separation that can appear in wrapped bodies over time — which is why JettyGuard recommends mould-process fenders where long service life under frequent use is the priority.

For the full breakdown of ISO 17357-1:2014 Type I / Type II and the test regime, see understanding the ISO 17357 pneumatic fender standard.

Foam filled fenders and pneumatic fenders degrade differently: a pneumatic fender depends on holding air pressure and an intact rubber-and-cord body, while a foam filled fender absorbs energy through its closed-cell foam core and depends on the integrity of its outer skin. Neither is universally “longer-lived” — service life on both is governed by duty, exposure, and maintenance rather than by a fixed catalogue number.

A pneumatic fender’s critical maintenance item is pressure: leaks, valve condition, and overdeflection from underinflation are the main service-life risks. A foam filled fender has no air to lose, so it tolerates minor skin punctures without sudden failure, but its skin wear and core compression set over time determine when it must be replaced.

For a full side-by-side of the two technologies — energy absorption, hull pressure, maintenance, and where each fits for LNG and STS work — see the pneumatic fender vs foam filled fender comparison.

Yes. JettyGuard supplies mould-process pneumatic fenders built to ISO 17357-1:2014, available as Type I (net-type) or Type II (sling-type), in the standard size range up to 4,500 × 9,000 mm, with per-unit test certificates as standard. For duty where long service life under frequent operation matters — such as FSRU and LNG terminal berthing — JettyGuard recommends its mould-process fenders, which in the company’s field experience reach about 15 years of service life under correct maintenance.

Supply scope for LNG terminal and FSRU projects:

• Size range: standard ISO 17357-1:2014 sizes through 4,500 × 9,000 mm (mould-type spec, Pneumatic 50 and Pneumatic 80).
• Construction: mould-process body, built to ISO 17357-1:2014.
• Fender type: Type I (net-type, chain-and-tyre net) or Type II (sling-type) per project requirement (ISO 17357-1:2014, §4.1).
• Pressure grade: Pneumatic 50 (50 kPa) or Pneumatic 80 (80 kPa) (ISO 17357-1:2014, §4.2).
• Certificates: prototype test certificate plus commercial (per-unit) test documentation; third-party inspection to ISO 17357-1:2014 by BV, DNV, CCS, or ABS available per project.

Per-unit test documentation matters for whole-life cost. The factory test certificate records that fender’s initial pressure, dimensions, and visual condition — the baseline against which every field inspection measures pressure drop or dimensional change over the fender’s life.

To specify a fender for your berth, share your vessel class and berthing conditions on the pneumatic fenders for FSRU and LNG terminals page and the engineering team will confirm size, type, pressure grade, and certification package.