Saturday, December 5, 2020
Maritime Propulsion

November 2, 2020

Marell M15 Quad Outboard Open High-Speed Interceptor Launched

M15Q conducting maneuverability and high speed test runs. Photo courtesy Marell Boats of Sweden

Marell Boats of Sweden launched the M15 Quad outboard open high-speed interceptor that includes fine tuning of the M15 hull and the addition of four Mercury 450HP Outboard engines on an extended platform.

The M15 is designed for high speed interception and boarding, with a center steering position for a helmsman to optimize control and allow for full view of the surroundings during boarding maneuvers and high speed turns. Ullman shock absorbing seats level out the impact from the sea at high speeds up to 70 knots for the crew and the officers.

The raised fore deck creates a stable platform for the officers when approaching other vessels while the lower aft deck can be used when boarding smaller vessels and launching watercrafts and rescue runners carried on deck. The aft deck is designed to be a flexible and stable multi-purpose platform from where you can launch crew members to a helicopter and successfully carry out complex SAR operations in high seas.

The M15 has been extensively tested by the shipyard engineering team, and the vessel accelerates from 0 to 50 knots in less than 12 seconds without losing the sightline to the horizon. The vessel is designed to operate in very rough sea conditions, up to Sea State 6. With the full body fore end, the vessel runs extremely dry with no green water on fore deck or spray on windscreens. The hull plate of 8 mm and the special pattern of longitudinal and transversal framing allows the vessel to handle impact from the sea in speeds up to 70 knots without any damages or buckling tendencies of the hull.

The vessel is built to meet classification requirements from Lloyds Register Grey boat code and with design assessment in accordance to Lloyds Register + 100A1 SSC Patrol HSC G2.

The deck girder structure of the Marell crafts are designed to carry sandwich composite deck panels, which are glued to the girder structure, forming a strong and watertight bonding and the deck panels themselves are acting as insulation against excess heat (from sun) and reduces the deformation of the hull in really hot deck temperature as the panels will absorb any elongation of the aluminum plating. By this method the M15 will be very suitable to work across all climate zones with great variations in air temperature and solar radiation.

The canopy is made of vacuum molded GRP, to reduce weight and noise and isolate the crew area from the effects from both cold spells and burning sun. The novelty of this design approach makes the M15 craft suitable for both arctic and tropical conditions within the standard hull specification.


M15Q in between test runs in the Stockholm archipelago. Photo courtesy Marell Boats of Sweden

  • Main ParticularsLOA (incl. engines and fender) ... 15.46m
  • BOA (incl. fender) ... 4.18m
  • Depth deck at foredeck ... 2.43m
  • Draft max. (approximately) ... 1m
  • Classification ... Lloyds Register + 100A1 SSC Patrol HSC G2