In the event of a claim, the insured, whether a co-owner or a syndicate of co-owners, must declare its occurrence to his insurer. The latter will generally appoint a claims adjuster who will guide him through the steps of the claim. The claims adjuster may also be mandated by syndicates of co-owners. This reality is even more true because of the importance of the insurance deductibles, sometimes unreasonable, that they have to bear, leaving them with all the responsibility of managing the loss. Investigating the circumstances of a disaster, assessing the damage caused by a claim and negotiating a settlement are the three key functions of this certified professional.