Described are submersible assemblies including a support structure comprising a pair of flotation devices and a cabin pivotally coupled to the support structure between the pair of flotation devices having an outer enclosure encapsulating an inner cabin, wherein the cabin is configured to rotate between a raised position above a surface of a body of water and a submerged position, wherein at least a portion of the cabin is below the surface of the body of water, and wherein the inner cabin is configured to maintain substantially the same attitude as the support structure when the cabin rotates between the raised position and the submerged position.