For more major maintenance or repair, Triton can be brought to the surface by blowing the ballast water. Still connected to the seabed, Triton is in effect a tethered catamaran with considerable stability as a platform for access and effective work.
Access can be gained to the 1100 tonne twin hull body from a service vessel, see above right. Once 'on board', maintenance staff can gain access to the electrics and control rooms (see image below) and each turbine nacelle via hatchways and cross arms. Access to the seabed hinge is by hoisting up the tether arm in reversal of the initial deployment routine.