Abstract: A method and apparatus are disclosed for reducing flow induced vibration in at least one subsea structure. The method comprises the steps of, via at least one subsea acoustic sensor (190), detecting at least one characteristic associated with acoustic energy in sea water proximate to the sensor (190), responsive to the detected characteristic, varying at least one operational parameter of a fluid flowing along a fluid flow pathway associated with a pipe member (160).

Abstract: A method and apparatus are disclosed for providing auxiliary equipment at a subsea location. The apparatus includes a housing including at least one wet mate receptacle connector and at least one wet mate plug connector spaced apart from the receptacle connector, at least one electronic auxiliary device in the housing, at least one connector member extending through a portion of the housing connecting at least one connection element of the wet receptacle connector to a respective at least one connection element of the wet plug connector; wherein the auxiliary device is connected to the connector member in the housing to thereby connect the auxiliary device to the connector member.

Abstract: A method and apparatus are disclosed for reducing flow induced vibration in at least one subsea structure. The method comprises the steps of, via at least one subsea acoustic sensor (190), detecting at least one characteristic associated with acoustic energy in sea water proximate to the sensor (190), responsive to the detected characteristic, varying at least one operational parameter of a fluid flowing along a fluid flow pathway associated with a pipe member (160).

Abstract: A method of applying acid-wash to a subsea connection assembly, in particular a stabplate connection, in order to remove unwanted material such as marine growth and calcareous deposits. The method consists of inserting a plug, containing channels, into a central in a stabplate connection and injecting acid-wash through the plug. The plug may be carried by an operating tool arm of a remotely operated underwater vehicle (ROV).

Abstract: A wireless subsea seismic sensor capable of independent location and operation in arrays, and methods of data collection from arrays of such sensors.

Abstract: A method of applying acid-wash to a subsea connection assembly, in particular a stabplate connection, in order to remove unwanted material such as marine growth and calcareous deposits. The method consists of inserting a plug, containing channels, into a central in a stabplate connection and injecting acid-wash through the plug. The plug may be carried by an operating tool arm of a remotely operated underwater vehicle (ROV).