Recently completed underwater maintenance project for a fleet of sailing drones in Alameda, CA.

Hull cleaning project at Oakland Jack London Square Marina for a boat with heavy fouling that has not been hull dived in 2+ years,

Project for removal of a large rope stuck in the propeller.

Lost anchor retrieval at Angel Island. Contact us for underwater retrieval of lost items such as phones, jewelry, anchors, sensors, and other items dropped in the water in the San Francisco Bay.

Zinc anodes are the protection you need for your boat's metallic parts (shafts, props, rudders, etc.). These anodes are placed over and connected to the metallic parts of your boat that need protection from electrolysis-caused corrosion. Your anode should be replaced once per year as a minimum however, you should check it regularly and replace it once it has corroded to 45-50% of its original size.

Poseidon Boat Services offers boat salvage, recovery of a sunken boat, and marine assistance.

Hull cleaning is one of the most important preventative maintenance services you can do to extend the life of your boat. A clean bottom will provide you with better fuel efficiency on the water, faster speeds, and will reduce pollution. We recommend hull cleaning every 2-3 months.

The purpose of polishing the propeller on your boat is to reduce fouling and provide the highest smoothness for reduced drag, faster speeds, and higher fuel efficiency. A smooth surface will prevent marine life from attaching itself to the propeller. Underwater propeller cleaning and polishing is performed by a diver while the boat is berthed.

Splash Zone is an epoxy putty compound used for the top-sealing of repairs at, above, or below the waterline in fresh or salt water splash zones. This is an example of underwater application to repair fiberglass.