Ship Agency & Marine Surveyors. SHIPPING MARINE SERVICES (SMS) was born with the main aim to provide an integral marine services; although our main activity is the afloat repairs , we can act as your ship agency and/or your marine surveyors.- Areas of influence: - Strait of Gibraltar - Spain main port , among other: Barcelona, Ferrol, Valencia , Huelva, Motril, Gijón. Our procedures have the main objetive to comply, to protect and to preserve the environmental of Algeciras Bay