A marine ladder includes a base and a stair assembly connected to the base. The stair assembly includes four telescoping assemblies, each having an outermost member and one or more telescoping members telescopingly extendable therefrom. A step is connected between the respective outermost members of the four telescoping assemblies. Further steps are connected between respective telescoping members of the four telescoping assemblies.

A boat includes a hull provided with a rear stern hatch located in correspondence with an internal stern compartment of the hull and suitable for opening and closing in correspondence with an aperture of the compartment. The hatch having a body with opposed sides located in correspondence with side walls of the compartment and upper edge and lower edge. The hull having a stern platform that is movable and submersible. The hatch is not provided with any direct connections to the hull, but it is connected to the stern platform to reach, upon opening, a position submersed in the water where the boat is located in the moment when the platform submerges into the water.

A telescopic access bridge includes a unit provided therewith, and a method therefor. The telescopic access bridge comprises a base unit, an elevating unit having a first end with a first hinged connection to the base unit and a second end, and a bridge comprising a main bridge part and a telescopic bridge part. The bridge has one end with a second hinged connection to the second end of the elevating unit.

A bulwark terrace with integrated door is provided; the bulwark terrace may be a portion of a bulwark on a ship or yacht that is hinged so as to be able to fold outwards and downwards and be flush with the deck after doing so, thereby extending the deck surface. The bulwark terrace may also include a door that may open independently of the bulwark terrace to allow boarding of the yacht or ship through the bulwark without deploying the bulwark terrace.

A retractable boat extension. The retractable boat extension is a platform that is attachable to a boat, such as a pontoon boat, that provides additional space to transport items or lounge upon. The platform includes a sliding mechanism having an actuator for sliding relative to the boat, pedestal mounts for attaching a plurality of interchangeable accessories thereto, such as grills, fishing chairs and food preparation tables, an outboard motor mount configured to receive a variety of outboard motors including, but not limited to, trolling motors, and a mounting bracket configured to receive a forward ramp for handicapped access to the pontoon boat.

The present invention relates to a telescopic access bridge (2), a unit provided therewith, and method there for. The bridge comprises: a base unit (4); an elevating unit (8) having a first end with a first hinged connection to the base unit and a second end; a bridge (28) comprising a main bridge part (30) and a telescopic bridge part (32), the bridge having one end with a second hinged connection to the second end of the elevating unit.

Apparatus (100) and method for providing active motion compensation control of an articulated gangway (200) which comprises at least one fixed part fixedly mounted on a sea going vessel, a movable part being movable relative to the fixed part, and at least one actuator for moving the movable part relative to the fixed part. A first position reference device provides position and attitude information (m) of the vessel referenced to earth. A second position reference device provides position and attitude information (y) of the movable part referenced to the gangway. An actuator driver generates an actuator control output in response to a regulator signal (R). An active motion compensation controller device receives the position and attitude information m and y, an operator control input (J), and the velocity information (y{dot over (y)}) of the movable part. A differential kinematic (DiffKin) device compute and outputs a current position (p) and velocity (v) of the gangway endpoint from m and y. An active motion compensation (AMC) device computes and outputs a reference position (pp) and velocity (vv) of the gangway endpoint from J, p and v computed by the DiffKin, An inverse kinematic (Inv) device computes and outputs a position reference () and velocity reference (i) of the gangway endpoint from p and vv computed by the AMC. A regulator (Regulator) device computes and outputs said regulating signal (R) in response to inputs of said a position reference () and velocity reference ({dot over ()}) computed by the AMC.

The invention relates to a vessel provided with a boom construction, especially a gangway construction, for transferring persons and/or cargo from said vessel to an offshore object or vice versa. The boom construction comprises an elongated mast structure extending in a direction substantially upwards from a deck of said vessel. Said mast structure is pivotally mounted with respect to a hull of the vessel in a manner such as to be pivotable with respect to said hull about a single pivot axis only. The boom construction further comprises a boom, especially a gangway, which is connected to the mast structure and which extends from the mast structure in a substantially sideward direction. Furthermore, the boom construction comprises at least one actuator for pivoting the mast structure such as to compensate for at least a part of a roll movement of the hull of the vessel.

A walkway installation comprising a base (1) intended to be fastened to a support construction, such as to the deck (5) of a ship (6), as well as a base bridge part (2) that is connected at one end so it can be rotated around an upright base axis of rotation (11) with the base. Furthermore, a main bridge part (4) is provided on the other end of the base bridge part (1) as well as a hinge construction between the base bridge part (1) and the main bridge part (2). The hinge construction has an upright main axis of rotation (12) and an auxiliary axis of rotation (13) aligned transversely to the upright main axis of rotation and transversely to the main bridge part. By rotating the gangplank parts, the installation may be adjusted in a reliable and quick way in relation to a fixed object or another vessel.

A bulwark terrace with integrated door is provided; the bulwark terrace may be a portion of a bulwark on a ship or yacht that is hinged so as to be able to fold outwards and downwards and be flush with the deck after doing so, thereby extending the deck surface. The bulwark terrace may also include a door that may open independently of the bulwark terrace to allow boarding of the yacht or ship through the bulwark without deploying the bulwark terrace.