Our Services.

  • Boat hull cleaning underwater boat bottom diving. Poseidon Boat Services is serving the marinas in Alameda (24 hours), Berkeley, Emeryville, Oakland, Richmond, San Francisco, Sausalito, and Treasure Island.

    Hull Cleaning

    The purpose of underwater hull cleaning is to remove biological roughness or fouling. A build-up of marine fouling can lead to increased drag, resulting in a detrimental impact on a vessel's hydrodynamic performance and hence the relationship between speed, power performance, and fuel consumption. We specialize in hull cleaning projects for boats with severe fouling.

  • Boat deck pressure washing: the left BEFORE picture is dirty and covered with algae and grime, while the right AFTER deck picture is clean and free of dirt or algae. Serving the marinas in Alameda (24 hours), Berkeley, Emeryville, Oakland, Richmond,

    Pressure Washing

    Regular cleaning is one of the most important parts of boat maintenance. Pressure washing a boat removes salt buildup, algae, and debris that can cause long-term damage to your vessel’s exterior. It is a great option for especially dirty messes. Proper cleaning techniques make all the difference between maintaining your boat’s value and causing costly surface damage.

  • Boat anodes zinc replacement. Poseidon Boat Services is serving the marinas in Alameda (24 hours), Berkeley, Emeryville, Oakland, Richmond, San Francisco, Sausalito, and Treasure Island.

    Zinc Replacement

    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.

  • Underwater boat diver survey. Poseidon Boat Services is serving the marinas in Alameda (24 hours), Berkeley, Emeryville, Oakland, Richmond, San Francisco, Sausalito, and Treasure Island.

    Underwater Diver Survey

    The purpose of underwater survey is to provide the information necessary to evaluate the condition of the boat’s hull. Our underwater diver survey includes a 1-minute video recording with GoPro camera.

  • Underwater items retrieval (anchor, cell phone, jewelry). Poseidon Boat Services is serving the marinas in Alameda (24 hours), Berkeley, Emeryville, Oakland, Richmond, San Francisco, Sausalito, and Treasure Island.

    Underwater Items Retrieval

    Retrieval of lost items such as phones, jewelry, anchors, sensors, and other items dropped in the water in the marina. Please call for retrieval of items lost outside of a marina.

  • Boat propeller polishing and replacement. Poseidon Boat Services is serving the marinas in Alameda (24 hours), Berkeley, Emeryville, Oakland, Richmond, San Francisco, Sausalito, and Treasure Island.

    Propeller Polishing and Replacement

    The condition of the surface of the propeller influences its efficiency. The surface of a propeller will become less smooth due to strain and cavitation damage, whereas growth will start to develop over time. Most small dings or bends in a propeller can be repaired for a reasonable price. A dinged, bent or chipped propeller won't work as it used to and can even affect the overall engine performance. If your damage includes bites or chunks out of the blade, you should consider a new propeller.