How do you raise a sunken boat?

Answer 1

A boat sinks when the hull no longer displaces the volume of water that equals the weight of the boat. Every sunken boat has its' own set of problems. There is not one way to that fits all. I raised one boat by removing the ballast weight, then pumping out the water when the gunnels all raised above the surface of the water. Another was towed to the waters edge at high tide then pumped out the water at low tide, (only about a three foot difference.) You might need to patch holes or turn off valves before you start. One way is to carefully provide flotation in the form of air bags spaced to lift the boat in an upright manner with straps. Bags placed in a compartment can brake through the deck. Straps on the hull if not wide enough can rupture the hull. Pumping water out of compartments in the wrong order can roll the vessel. Remember, The worst thing that can happen while trying to salvage a boat can be terrible.