Three-way submersible and mobile sailing masts for ships and yachts (container ships, sailing yachts, transport and cargo ships)

摘要

Three-part submersible and movable sailing masts for ships and yachts (container ships, sailing yachts, transport and cargo ships) The sailing mast structure, consisting of two main masts and an auxiliary mast for one or more sails, The sails can be disembarked or disembarked at any time and the sails can also be disembarked and disembarked.