Patent ID: 8707881

Claim:
A multi-hulled vessel comprising a main hull and at least one outer hull to each side of the main hull, the main hull and each side hull adjacent thereto being interconnected by a bridge structure, the bridge structure and the hulls connected thereby cooperating to provide a deck surface adapted to carry a load, a superstructure including a substantially enclosed load space that includes a load deck provided by the deck surface, the main hull being configured to define at least one engine room below the deck surface, and trunking for provision of services to the engine room, the trunking being routed below the area of the deck surface required for carrying the load, wherein the services comprise air trunking for delivery and discharge of ventilation air to and from the at least one engine room; wherein the trunking comprises an intake air trunk and a discharge air trunk; and wherein the intake air trunk and the discharge air trunk each comprises a first section extending outwardly under the area of the deck surface required for load carrying, and a second section extending upwardly to the outboard side of the vessel for communication with the atmosphere.