Main Lift Cables
These cable types must comfortably support the weight of the TMS containing the ROV, its Tether and any ancillary packages that may be required whilst also allowing for extraneous forces due to vessel motion and tidal forces.
ROVs
Tethers provide services similar to those of the Main Lift Cable, however in this case between the vehicle and either the TMS or the surface directly.
Subsea Crwaler
Similar in operation to both Main Lift Cables and Tethers, these cable/umbilical types provide electrical power, electrical and/or optical signal and occasionally hydraulic or pneumatic services between land or an off-shore vessel and a sea-bed crawling vehicle.