Mooring Recovery System product description

TBR 800 Release is available with a standardized Mooring Recovery System (MRS). The Thelma Biotel MRS is produced in cooperation with renowned Subsea equipment supplier Partnerplast at a reasonable cost.

MRS consists of a single spherical buoy that slips over the receiver and provides the buoyancy to let it rise efficiently to the surface once the release mechanism is triggered. The buoy is made of a rugged polyethylene shell filled with synthetic foam tailored to the required depth. The foam backing ensures the float will never puncture and lose its positive buoyancy, implode, or crumble from the sustained pressure. It will neither soak over time nor carry over-pressure to the surface, which can explode when brought back up on deck. It has a bright yellow color to make it easy to spot at sea. The buoy rests over and functions as a lid to a rope drum/canister with a capacity of up to 150 m of 4 mm Dyneema rope (breaking strength of about 1800 kg). The rope drum is made from thick polypropylene plastic with a welded-in bottom plate, and an internal buoyancy device to keep it up right after the buoy has left.

Safe recovery

The MRS allows the user to safely call up the TBR 800 Release without fear of pulling away with the current. The rope secures it to the mooring while on the surface, and the rope can then be used to winch up the mooring, clean up after deployment and recover all components. The single, spherical buoy over the tubular rope drum secures a minimum of current drag and minimizes possible entanglement points. The lowered risk of entanglement comes in handy when operating in areas where fishers deploy nets, loose kelp, and other debris carried over the bottom by a current. Two versions of the rope drum are available. The large unit has 150-200 m of rope capacity, and a smaller unit with a current drag profile and up to 100 m rope capacity.