Patent attributes
A method using a floatable offshore depot to provide sheltered area using a tunnel for safe and easy launching or docking of watercraft and embarkation or debarkation of personnel. The method can be used to transfer equipment between the watercraft and the floatable offshore depot using an internal dock side of the tunnel. The floatable offshore depot can have a buoyant hull, a keel, a main deck, and at least two connected sections between the keel and the main deck. The connected sections can extend downwardly from the main deck toward the keel and can have an upper cylindrical side section, a transition section, and a lower cylindrical section. The method uses the tunnel at an operational depth, with a tunnel opening to an exterior of the buoyant hull to receive the watercraft.