A comprehensive survey of the entire vessel including test/inspection of all on-board systems and a river/sea trial. A pre-purchase survey gives you the confidence to make a purchase decision.
Insurance companies often require a condition report when considering the insurance of older vessels.
The survey process is similar to a Pre-purchase survey, but is usually for the existing owner. A condition survey is often used for planning a maintenance schedule.
When a vessel has suffered loss or damage, this survey identifies the extent of the damage. The report is often used to help boatyards quote for repairs.
This may be part of a pre-purchase survey. Great expense can be avoided or at least planned.
This is a limited inspection to gain an approximate market value. A valuation is not a survey.