Abstract: Apparatus and methods are described for subsea pipeline servicing, including dewatering and chemical containment. A subsea pipeline service skid has a containment bladder affixed to the skid and in fluid communication with a skid mounted pump dimensioned to pump fluid from the subsea pipeline. A sensor system at the suction side of the pump detects the presence of seawater, water, chemical agent, or gas so the pump can be operated accordingly. The chemical agent used during dewatering operations of the pipeline is selectively pumped to the containment bladder subsea so the subsea vehicle can independently take the chemical agent to the surface.

Abstract: A user input device (2) comprising means (8, 6, 4) for producing a highlight for highlighting any one of the icons in an arrangement of icons, the arrangement having a first portion comprising a first plurality of icons and a second portion comprising at least one icon; a user input comprising a directional control (12) for user actuation and a selection control (14) for user actuation; and control means (8) arranged to change the position of the highlight in response to user actuation of the directional control (12), to select an icon of the second portion of the arrangement in response to user actuation of the selection control (14) when the icon is highlighted and to select automatically an icon of the first portion in response to the highlighting of the icon.