Before you start
Gather the appropriate supplies and review the specific equipment manual.
- Bilge alarm and pump schematic
- Seacock map
- Emergency communication plan
Step-by-step instructions
Treat it as real until proven otherwise
Check the boat heading and crew safety and alert others aboard.
Assess the water rise safely
Read visible bilge levels and pump operation without entering dangerous flooded machinery spaces.
Identify likely sources
Check accessible through-hulls, shaft seals, plumbing and deck drains while preparing for propulsion or rescue needs.
Use emergency response early
Follow the flooding plan and notify appropriate emergency services or nearby assistance if water cannot be controlled.
Diagnose a false alarm only afterward
Inspect sensor cleanliness and wiring once the boat is safe and dry.
Safety note
Uncontrolled flooding can sink a vessel quickly. Do not disable the alarm before ensuring that water is not entering the hull.
Key takeaway
A high-water alarm calls for a safety response first and a sensor diagnosis second.
Keep this job on your maintenance schedule
Save the topic as a maintenance task, choose a due date or engine-hour target, and record future service. Free and stored on your device.
Add to my maintenance plannerThis guide is for general education. Follow your equipment manufacturer’s instructions, current navigation guidance and applicable marine safety standards. When uncertain, use a qualified marine professional.