The contract includes the inspection, servicing, repair and supply of CMAL’s aid to navigation systems for the next five years, with the option to extend for another three years.
These systems include lighthouses, fixed lights and buoys that aid a vessel when navigating into a port or harbour.
GSS will work closely with CMAL’s harbour master, David McHardie and the harbour operator, CalMac Ferries Ltd, to maintain the systems.
Mr McHardie said: “We are delighted to appoint Gareloch Support Services to maintain our navigational aids and moorings.
“Gareloch Support Services have the experience required and knowledge of providing these services in the west coast of Scotland and the Clyde Estuary.”
CMAL awarded the contract in compliance with the International Association of Marine Aids (IALA) Guideline No. 1077, which requires marine services to maintain systems and provide public and roll on and roll off ferry moorings and tidal staff gauge boards to sustain a reliable service and provide information to mariners.
CMAL is a publicly owned company with Scottish Ministers as the sole shareholder.