A multi-purpose mariner safety and motor housing arrangement for the secure enclosure of the lower drive unit of an inboard/outboard or outboard motor for a boat. The multi-purpose housing preferably comprises a left half housing and a right half housing hingedly connected along a front edge thereof. The left half housing and the right half housing are arranged to lockably enclose a lower drive unit of a motor. The housing arrangement encloses a plurality of accessible, watertight sub enclosures disposed within the left and the right half housings for safe containment of emergency gear therewithin, to provide floatation and safety to mariners even when the housing is removed from the motor.