Not every situation needs a full survey. A narrowed scope can be enough to inspect one system, one damage or one repair. What matters is that what is in scope and what is not is written down from the start.
When it fits
- A single system, such as engines only, electrics only or rig only.
- Establishing the extent of a particular damage.
- Accepting a repair or refit job.
- Rechecking specific findings from an earlier survey.
When it does not
A partial survey is not recommended before a purchase; the defects that change a buyer's decision are often in the system nobody looked at. Lenders and insurers also usually ask for a full condition report.
Writing the scope
- Systems to inspect. One by one, with their boundaries.
- Method. Which readings will be taken.
- Exclusions. What is not inspected, stated clearly.
- Report. Findings for in-scope systems only, graded A, B or C.
When a partial survey?
A partial survey examines a particular part or system of the boat rather than the whole. It suits an insurance renewal where only certain points need updating, a check of one area after a repair, or a buyer wanting to settle a specific doubt. It does not replace a full pre-purchase survey and says nothing about parts outside its scope.
Scope examples
The most important step in a partial survey is writing down at the start what is examined and what is not: for example, hull and underwater only, the electrical system only, or engine and sea trial only. The report opens with the same scope and gives no view on matters outside it.
Examples
- Underwater moisture readings after an osmosis treatment.
- A rig check after re-rigging.
- Confirming for an insurer that particular recommendations have been dealt with.
- Examining one area a buyer is worried about.
Risks
The biggest risk of a partial survey is a buyer reading it as a full one. For someone making a purchase decision, a partial survey does not show problems outside its scope. So when a partial survey is asked for before purchase, that limit is discussed openly and stated in the report.
Fee
The fee is set by scope and given in the written quote together with the scope.
Upgrading later
If a partial survey raises questions beyond its scope, it can be extended to a full survey; the work already done is not repeated.
Records
Partial reports fit into the boat's file alongside earlier full surveys, keeping its history complete.
For an owner who knows the boat well and wants one question answered, a partial survey is an economical route; defining the question clearly is the first step to choosing the right scope.
It uses the same methods and report format as a full survey; only the scope differs.
The right scope is the smallest one that answers the question asked, chosen with the boat's history and earlier reports in view.
The scope is itemised in the written quote and agreed by both sides, so there is never later doubt about what the report covers and what it does not.
Started with the right question, a partial survey saves time and budget and gives the owner exactly the answer needed, nothing more and nothing less.
If in doubt about scope, ask before booking; a short call usually settles it.