A professional who coordinates activities of crew patrolling municipal harbor to detect and apprehend criminals and render assistance to persons in distress. Respnsibilities include:

• Directs navigation of power launch.
• Assigns stations and duties to crew as required by occurrences during patrol.
• Rescues drowning victims, recovers bodies, and attempts to prevent sinking of ships in distress.
• Cooperates with federal or other law enforcement officers in detection and apprehension of criminals, such as smugglers and illegal entrants.
• Investigates suspicious vessels and establishments in harbor area.
• Reports navigation hazards, faulty navigation aids, and fires or marine accidents to authorities concerned.
• Receives orders from and reports activities to police chief or harbor master, using radio or telephone.
• Inspects appearance and condition of vessel and crew for conformity with departmental standards.
• Maintains log of activities and fuel or other supplies consumed.
• Requisitions provisions and fuel.
• May participate in firefighting activities in dock area.
• May train crewmembers to rescue drowning victims, recover bodies, and prevent sinking of ships in distress.
• May be designated according to rank as Harbor-Police Captain; Harbor-Police Lieutenant.