Abstract: Deployable system of one or more sensors (116) for incorporation on a marine installation (100). The sensor system comprises a sensor mount (114) securable to the marine installation (100) and a sensor (116) mounted on the sensor mount (114). The sensor mount (114) has a raised configuration and a deployed configuration, such that the sensor (116) is arranged to be held rigidly in place below a hull (102) of the marine installation when the sensor mount (114) is in the deployed configuration. The sensor mount (114) is arranged to rigidly hold the sensor (116) in a higher position in the raised configuration than in the deployed configuration. The sensor system is configured to monitor local wildlife and the interaction of the wildlife with the marine installation (100).

Abstract: Disclosed herein is a turret mooring system for a tidal turbine assembly 150, which increases the ratio of the torque exerted by the turret 100 relative to frictional forces between the turret 100 and the assembly 150 moored to the turret 100. In some examples, the frictional forces are reduced by the turret providing an upward force to the assembly, which also resists pitching moments. In other examples, the torque exerted by the turret 100 is increased by the use of a bifurcated mooring line 106, 108 which couples to two spaced apart attachment points 128 on a chain table 104 of the turret 100 and to a single point 114 on the water bed.

Abstract: A turbine assembly (200) for location in river or sea locations having unidirectional or bidirectional flow. The as- sembly (200) has: a support structure (226) and a first turbine system, supported by the support structure (226). The first turbine system has a centre of mass and being pivotally connected to the support structure (226) so that the first turbine system is rotatable, relative to the support structure, about a centre of rotation. The first turbine system includes a first flowing-water driveable turbine (216) for generating power from water flow. The first turbine (216) has an operational axis (322), and is designed for optimum power output when local water flow is aligned with the operational axis (322). The wherein the centre of rotation is spaced away from the centre of mass of the first turbine system in a direction parallel to the operational axis of the turbine.