2568. There is a deviation where the ship departs in fact from the course specified in the contract or, if none is specified, where the usual and customary course is departed from.
The insurer is discharged from liability from the time of a deviation without lawful excuse, whether or not the ship has regained her course before any loss occurs.
1991, c. 64, a. 2568; I.N. 2014-05-01.