Claims
Sudden versus gradual water ingress
| Pattern | Typical source | Usual outcome |
|---|---|---|
| Sudden ingress | Failed hose, split seacock, impact damage, stern gland failure | Resulting damage generally covered |
| Gradual ingress | Deck fittings, chainplates, window seals, hatch frames | Generally excluded as wear or maintenance |
| Rainwater accumulation | Blocked cockpit drains, failed cover, unsecured hatch | Frequently excluded outright |
| Core saturation | Water tracking into balsa or foam core over years | Excluded; often first discovered at survey |
| Freshwater system failure | Burst tank, failed pump, split hose | Often covered as sudden, check the wording |
Common leak sources on boats
- Chainplate seals, which work loose under rig load and drop water straight into the bulkhead they are bolted to.
- Stanchion bases and deck hardware bedded years ago and never rebedded.
- Window and portlight frames, where the sealant has gone hard and cracked.
- Hatch gaskets that have compressed permanently.
- The rudder stock tube and the mast step or partners.
- Deck-to-hull joints, especially on older production boats.
- Cockpit drains and scuppers that are half blocked with leaf litter.
Evidence of the water ingress cause
The assessor is trying to date the water. Timber that is black and soft, core that crumbles, corrosion staining in layers, and tide-marks at multiple levels all indicate a long process. A clean break in a hose, bright metal at a fracture and a single water line indicate a recent event. You cannot change which of those you have — but you can make sure the evidence of a sudden failure survives.
- Photograph the source before pumping out, if the boat is safe to be on.
- Keep the failed hose, clamp, fitting or seal. Do not let the yard bin it.
- Record the bilge-pump cycle history if the boat has a counter or a monitoring system.
- Get a moisture-meter reading from a surveyor early, so the extent is documented.
- Provide the last survey, including any recommendations and proof you actioned them.
Maintenance to prevent gradual leaks
Rebedding deck hardware and chainplates, replacing hatch gaskets, and clearing drains before the wet season are unglamorous jobs that protect a far larger asset. A surveyor's moisture survey every few years also creates the documented baseline that makes a future sudden claim much easier to prove.
Read the wording before you need it
Almost every disputed marine claim turns on a definition, an exclusion or a condition the owner had never read. The PDS guide explains which sections decide claims.
Water ingress claims at a glance
- Covered
- Sudden failure of a fitting, hose or seal
- Usually excluded
- Gradual leaks, rainwater ingress, core saturation
- Decided by
- Physical evidence of how long the water has been there
- Preserve
- The failed component, before the yard cleans up
- Baseline
- A dated moisture survey makes later claims arguable
Related guides
- Boat Insurance Claims Australia: Incidents and Disputes
- Sinking and Flooding Boat Insurance Claims
- Mooring Failure and Dragging Claims
- Boat Insurance Exclusions Explained
- Pre-Purchase Survey vs Insurance Survey
- Product Disclosure Statement Guide for Boat Insurance