海上保险委付是指保险标的在推定全损的场合视同已全部损失，被保险人放弃保险标的，将保险标的的一切权利和义务转移给保险人而收取全部保险金额的制度。

Abandonment in Marine insurance is when constructive total loss happens, the assured transfer rights of the insurer to the subject matter insured and demands indemnification from the insurer.

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