Norway

Simek AS

The worlds largest yacht support vessels

SuperYacht Times takes a look at the largest yacht support vessels that are currently in operation from across the globe.

The world’s largest yacht support vessels

<img src="https://photo-assets.superyachttimes.com/photo/397742/image/large-58886850af08d5a0a85db37545736dc3.jpg" data-gid="gid://syiq/Photo/397742">The 80-metre-plus <a data-gid="gid://syiq/Company/7044" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Simek AS (Company)">Simek AS</a> support vessel <a data-gid="gid://syiq/Yacht/16977" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="U-8180.0m (262'6&quot;)Simek AS2014">U-81</a> has been spotted anchored off the coast of Villefranche-sur-Mer last Thursday.Formerly known as FS Cygnus, the vessel emerged earlier this month from an extensive rebuild at <a data-gid="gid://syiq/Company/5453" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Zwijnenburg Shipyard (Company)">Zwijnenburg Shipyard</a> in Krimpen aan den IJssel. Originally constructed as an offshore support vessel for the oil and gas industry, she has undergone a significant transformation and now bears the name <a data-gid="gid://syiq/Yacht/16977" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="U-8180.0m (262'6&quot;)Simek AS2014">U-81</a> on both her stern and hull sides.Launched in 2014, <a data-gid="gid://syiq/Yacht/16977" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="U-8180.0m (262'6&quot;)Simek AS2014">U-81</a> was designed by <a data-gid="gid://syiq/Company/2207" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="mtu - a Rolls-Royce solution (Company)">Rolls-Royce Marine</a>, whose maritime division has since been acquired and rebranded as <a data-gid="gid://syiq/Company/6426" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Kongsberg Maritime (Company)">Kongsberg Maritime</a>. The vessel's redesign was undertaken by <a data-gid="gid://syiq/Company/8891" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Studio ZEA (Company)">Studio ZEA</a>, the recently established design firm founded by renowned yacht designer <a data-gid="gid://syiq/Company/8891" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Studio ZEA (Company)">Zlatko Imamovic</a>, while <a data-gid="gid://syiq/Company/37" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Azure Yacht Design & Naval Architecture (Company)">Azure Yacht Design &amp; Naval Architecture</a> acted as the owner's representative throughout the project.While the full scope of the rebuild has not yet been disclosed, the vessel now features a helideck with an accompanying hangar, enhancing her capabilities as a yacht support vessel.

U-81 support vessel in Villefranche-sur-Mer

The 80-metre-plus Simek AS support vessel U-81 has been spotted anchored off the coast of Villefranche-sur-Mer last Thursday.

Newly-converted yacht support vessel U-81 in Villefranche-sur-Mer 

The +80-metre <a data-gid="gid://syiq/Company/7044" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Simek AS (Company)">Simek AS</a> support vessel <a data-gid="gid://syiq/Yacht/16977" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="U-8176.6m (251'4&quot;)Simek AS2014">U-81</a> (ex-FS Cygnus) has been spotted in Rotterdam, the Netherlands, following an extensive conversion at the <a data-gid="gid://syiq/Company/5453" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Zwijnenburg Shipyard (Company)">Zwijnenburg Shipyard</a> in Krimpen aan den Ijssel. <img src="https://photo-assets.superyachttimes.com/photo/396515/image/large-da084f97851c09220f0042934a65c899.png" data-gid="gid://syiq/Photo/396515">The support yacht, converted from an offshore support vessel for the oil and gas industries, is now displaying the name <a data-gid="gid://syiq/Yacht/16977" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="U-8176.6m (251'4&quot;)Simek AS2014">U-81</a> on her stern and side profile. This suggests she is related to the previous 80.1-metre <a data-gid="gid://syiq/Company/6617" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Damen Shipyards (Company)">Damen Shipyards</a> support yacht U-81, which has since been sold and renamed <a data-gid="gid://syiq/Yacht/11888" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Wingman80.1m (262'10&quot;)Damen Shipyards2022">Wingman</a>. The previous U-81 also spent considerable time in the care of Zwijnenburg Shipyard.<img src="https://photo-assets.superyachttimes.com/photo/396508/image/large-3ccc75bc4a4dd9f3638766f01df949a3.jpg" data-gid="gid://syiq/Photo/396508"><a data-gid="gid://syiq/Yacht/16977" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="U-8176.6m (251'4&quot;)Simek AS2014">U-81</a> arrived in the Netherlands in April 2026 and spent 11 weeks at the <a data-gid="gid://syiq/Company/5453" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Zwijnenburg Shipyard (Company)">Zwijnenburg Shipyard</a>. Originally launched in 2014, <a data-gid="gid://syiq/Yacht/16977" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="U-8176.6m (251'4&quot;)Simek AS2014">U-81</a> featured exterior design and naval architecture by Rolls-Royce Marine (since taken over and rebranded <a data-gid="gid://syiq/Company/6426" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Kongsberg Maritime (Company)">Kongsberg Maritime</a>). The re-design of the vessel was done <a data-gid="gid://syiq/Company/8891" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Studio ZEA (Company)">Studio ZEA</a>, which is the new design firm by founded by renowned yacht designer Zlatko Imamovic, with <a data-gid="gid://syiq/Company/37" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Azure Yacht Design & Naval Architecture (Company)">Azure Yacht Design &amp; Naval Architecture</a> acting as the owners representative<img src="https://photo-assets.superyachttimes.com/photo/396507/image/large-1b0612ad97ae9c22a02e570688fb80eb.jpg" data-gid="gid://syiq/Photo/396507"><a data-gid="gid://syiq/Yacht/16977" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="U-8176.6m (251'4&quot;)Simek AS2014">U-81</a> previously operated as an offshore vessel, displaying a red hull and a continuous working deck aft. Details surrounding the full extent of her rebuild have not yet been disclosed, but the first images show a white hull and superstructure, a more pronounced bulbous bow and an additional deck extending her aft profile.&nbsp;Her elevated deck provides a sheltered space beneath, as well as giving her a more traditional yacht-like appearance. <a data-gid="gid://syiq/Yacht/16977" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="U-8176.6m (251'4&quot;)Simek AS2014">U-81</a> now also displays a helideck and hangar, expanding her capabilities as a yacht support vessel.&nbsp;<img src="https://photo-assets.superyachttimes.com/photo/389111/image/large-0de1e59efd5df286448fcc404464721f.png" data-gid="gid://syiq/Photo/389111">SuperYacht Times has reached out to <a data-gid="gid://syiq/Company/5453" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="Zwijnenburg Shipyard (Company)">Zwijnenburg Shipyard</a> for more information on the rebuild of <a data-gid="gid://syiq/Yacht/16977" href="#managed-by-system" rel="noopener noreferrer" target="_blank" title="U-8176.6m (251'4&quot;)Simek AS2014">U-81</a>, but they were unavailable for comment.

U81: 77m support vessel rebuild in Rotterdam

The 76m Simek AS support vessel FS Cygnus has emerged from the Zwijnenburg Shipyard as U-81, following an extensive rebuild.