Boat Sum Insured Calculator
Prepare a sailboat or yacht valuation worksheet using a whole-vessel value, without counting the same equipment twice.
By GabrielLast reviewed Runs in your browser · optional saving on your device

Avoid counting equipment twice
Your valuation discussion summary
Enter the vessel value and all adjustments. Zero is valid for items that do not apply.
This worksheet organises your figures; it does not determine market value, an agreed value or a claim settlement.
Inputs stay in this browser. Saving is optional; avoid saving on a shared device.
Boat valuation worksheet Whole-vessel value: Not entered Additional value not already in the vessel figure: 0 Tender / outboard requested separately: 0 Personal effects requested separately: 0 Vessel total: Incomplete Separate limits: Incomplete Evidence: Included equipment: Policy questions:
How the sum insured worksheet works
Start with evidence for the complete boat in its current condition: comparable sales, a professional valuation or the insurer's requested basis. A whole-boat value normally already reflects its engine, mast, rigging and fitted equipment. Add only value you can justify as excluded from that baseline. Keep separately requested tender and personal-effects limits outside the vessel subtotal.
Worked example
A whole-yacht baseline of $100,000 plus $5,000 of evidenced additions not already included gives a vessel worksheet total of $105,000. A separately requested $4,000 tender limit remains separate. It is not automatically $109,000 of hull cover.
Questions for the insurer
- Does the policy settle on agreed value or market value?
- Are fitted electronics, sails and rig already included in the hull value?
- Do tenders and personal effects share the vessel limit or have separate limits?
- What valuation evidence is required and when must it be updated?
Save, download or print your results
These tools run on your device. Use Save on this device to keep a draft in this browser; saving is optional. Reset removes the saved draft. Download creates a text summary, and Print / save PDF opens your browser's print options. A saved worksheet is not an insurance application or confirmation of cover.
Frequently asked questions
Does this calculator value my yacht?
No. It organises your own evidence and amounts. It does not estimate market value, guarantee an accepted sum insured or calculate a premium.
Related guides
- Boat Insurance Quote Preparation Checklist
- Boat Insurance Cost Comparison Calculator
- Marine Surveys and Boat Insurance Australia
- Lagoon Catamaran Insurance Australia
- HH Catamaran Insurance Australia
- Catamaran Davits and Tender Lifting Insurance
- Agreed Value vs Market Value for Catamaran Insurance