A Coast Guard Mechanic, also known as a Machinery Technician (MK), is responsible for maintaining, repairing, and inspecting engines, propulsion systems, hydraulics, and other mechanical equipment on Coast Guard vessels and facilities. They ensure that ships, boats, and cutters remain operational by troubleshooting mechanical issues and performing routine maintenance. Mechanics may also work on small craft engines, air conditioning systems, and firefighting equipment. Their expertise is crucial for mission readiness, search and rescue operations, and law enforcement activities.