Japan

Oshima Shipbuilding Co Ltd

The worlds largest yacht support vessels

SuperYacht Times takes a look at the largest yacht support vessels currently in the world and in operation.

The world’s largest yacht support vessels

<a data-gid="gid://syiq/Company/6616" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Karmarine Shipyard (Company)">Karmarine Shipyard</a> has completed the transformation of the 1982 semi-submersible support yacht AS&nbsp;Super Servant 3, built by <a data-gid="gid://syiq/Company/6615" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Oshima Shipbuilding Co Ltd (Company)">Oshima Shipbuilding</a>.&nbsp; She left the Turkish yard as a “world-girdling” expedition motor yacht with an exterior styled by <a data-gid="gid://syiq/Company/5291" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Bozca Design Ltd (Company)">Bozca Design</a>, an array of standout features and new insignia. <img src="https://photo-assets.superyachttimes.com/photo/216914/image/large-421ef462ee71c88e89274b2f33a0a07c.jpeg" data-gid="gid://syiq/Photo/216914"><a data-gid="gid://syiq/Yacht/11924" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="OK146.0m (479'0&quot;)Oshima Shipbuilding Co Ltd1982">OK</a>, as she’s since been named, is unorthodox, to say the least. She has a length of 146 metres and a beam of 32.01-metres, which is most concentrated on her aft deck that boasts an impressive 3,300 open space. In her previous life, she was used as a ship to transport yachts, hence this large open flat deck. <a data-gid="gid://syiq/Company/6616" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Karmarine Shipyard (Company)">Karmarine Shipyard</a> took full advantage of this deck, as it is not only spacious – providing accommodation for 70 different toys, including a 46-metre sailing yacht, multiple tenders, buggies, amphibious vehicles and a sea plane – but can also be partially submerged. <img src="https://photo-assets.superyachttimes.com/photo/216915/image/large-9dad241a60f86c63ed920ede35a70deb.jpeg" data-gid="gid://syiq/Photo/216915"><a data-gid="gid://syiq/Company/6616" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Karmarine Shipyard (Company)">Karmarine Shipyard</a> enhanced her internal strength so that <a data-gid="gid://syiq/Yacht/11924" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="OK146.0m (479'0&quot;)Oshima Shipbuilding Co Ltd1982">OK</a> can handle both stern and side loading. Her submerging ability allows her to carry a wide range of tenders and toys, it also allows the vessel to transform into an “island concept”. <img src="https://photo-assets.superyachttimes.com/photo/216918/image/large-f404d9899fe2e64eb1816d04e4ba0d6f.jpeg" data-gid="gid://syiq/Photo/216918">Some of <a data-gid="gid://syiq/Yacht/11924" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="OK146.0m (479'0&quot;)Oshima Shipbuilding Co Ltd1982">OK</a>’s standout features include a glass-wrapped sun deck Jacuzzi, an outdoor cinema, a tennis court and a botanic garden. She also features not one, but four large aquariums. Some of her more practical features include a car ramp, a 40-tonne crane and a vertical wind turbine. <img src="https://photo-assets.superyachttimes.com/photo/216913/image/large-73f750c61f98e2b306202dfe48622147.jpeg" data-gid="gid://syiq/Photo/216913"><a data-gid="gid://syiq/Yacht/11924" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="OK146.0m (479'0&quot;)Oshima Shipbuilding Co Ltd1982">OK</a> can accommodate up to 20 guests, who’ll benefit from staterooms that have panoramic 360-degree views. <img src="https://photo-assets.superyachttimes.com/photo/216916/image/large-dd5c2b9dcfbe057c82d67dcac3439533.jpeg" data-gid="gid://syiq/Photo/216916">

146m semi-submersible explorer yacht OK

Karmarine Shipyard has completed the transformation of the 146m semi-submersible support yacht OK.