Updated October 26, 2026
How surveys describe it
Wording varies by surveyor. Illustrative examples (not quoted from any real survey):
- “Aluminum fuel tank shows pitting at the top surface.”
- “Fuel odor noted in the bilge; tank could not be fully inspected.”
What it is
Aluminum tanks corrode where water sits against them. Many are installed before the deck goes on, so replacement can mean cutting the boat open or removing engines.
How serious it is
Fuel leaks are fire hazards, and tank replacement cost is driven by access more than by the tank. Owners report the tank itself at around $1,500 to $2,500, with labor often more than that.[1][2]
In our reports this usually lands under Fix. Your survey's details decide.
What it typically costs
| Scope | Estimated range |
|---|---|
| 1 item | $3,000–$10,000 |
These are whole-job ranges drawn from published figures.[1][2]
- Fabricated aluminum tank
- Removing deck, engines or a generator for access can multiply this
Estimates to help you frame a conversation with a yard, not quotes. Real prices depend on the boat, the yard, access and what's found once work starts. Confirm with your surveyor or a qualified yard.
What to ask your surveyor or yard
- Is there an active leak or just surface corrosion?
- How is the tank accessed?
- Was a fuel odor noted anywhere?
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Get a free previewSources
- Reality check on new fuel tanks, Trawler Forum (owner reports). Boat owners' reported prices. Accessed 2026-10-26.
- Replacing fuel tanks on Carver 355 Aft Cabin, Carver Yacht Owners forum (owner reports). Boat owners' reported prices. Accessed 2026-10-26.