Fourth mates play a key role in supporting vessel operations that transport personnel, equipment, and supplies to offshore platforms, drilling rigs, and renewable energy sites. They assist in navigation, stand watch, oversee deck maintenance, and ensure safety procedures are followed. Their responsibilities also include updating nautical charts, managing onboard safety drills, and assisting in cargo handling to maintain vessel stability and efficiency.

This role requires a strong understanding of maritime navigation, ship operations, and international safety regulations. Fourth mates collaborate with senior deck officers, engineers, and marine coordinators to support offshore logistics. A career as a fourth mate offers opportunities to gain valuable experience in vessel operations while progressing toward higher maritime officer positions.