From your insurance provider every 5 years or so. The Surveyor Hired in most cases is hired and paid for by the owner of the vessel. In a few instances the Insurance companies hires the surveyor to do the survey. Please note. (The Surveyor works for whom they are hired by.) Its a good idea to check with your insurance provider if they have any special requirements for your insurance survey or surveyor.
Insurance survey maybe requested to insure a newly Purchased vessel. Pre-Purchase Surveys have been used for insurance surveys as well. Check with your Insurance provider what they may require.
If a vessel has had major work, restoration and /or repair. You and/ or Your insurance provider may want a new survey done to reflect the current condition of your vessel since the work has been completed.
The Person who has hired the surveyor is provided with a written report of the Insurance survey.