The essential elements of an ROV Launch and Recovery System (LARS) are:
An umbilical winch with sufficient capacity to accommodate the maximum length and diameter of ROV umbilical that the system requires. The winch will normally be fitted with a level wind mechanism to ensure even spooling of the umbilical cable onto the winch drum. A hydraulic winch motor is installed in the winch that is suitably sized to cater for the size of winch drum selected as well as the weight of the deployed ROV and TMS together with the umbilical weight and any dynamic amplification factors to be applied to the design.