- SES-X MARINE TECHNOLOGIES
- Shelquip Ltd
- SHIP EQUIP AS
- Shipham Valves Ltd
- Ships Electronic Services Ltd
- Silentor A/S
- SIMRAD AB
- Simtronics ASA (Head office)
- SKF Coupling Systems AB
- Sleev-it Fire Systems Limited
- SMC - Ship Motion Control
- SMEDEGAARDEN
- Smith Flow Control Ltd.
- SOLAR SOLVE MARINE
- Solberg Scandinavian AS
- Somas Instrument AB
- Southern Marine Consult AS
- SPERRY MARINE A/S
- SPX Flow Technology Danmark A/S
- Stadt Automasjon AS
- Star Instruments Ltd
- Steerprop Ltd
- STEINSVIK AS
- Stone Marine Propulsion Limited
- STT International Ltd.
- SURVITEC GROUP LIMITED
- Svend Hoyer A/S
- SYBERG AS
- TAMROTOR MARINE COMPRESSOS AS
- TAV Engineering Ltd
- TEAMTEC A/S
- TECHFLOW MARINE Ltd.
- TECO MARITIME ASA
- Teekay Couplings Ltd.
- Teignbridge Propellers International Ltd
- Teknoware OY
- TENMAT Ltd.
- THANNER AND Co.
- THRANE & THRANE A/S
- Thyboron Skibssmedie
- Tideland Signal Ltd
- Tides Marine International Limited
- Torginol Teollisuuslattiat Oy
- Total Filtration Ltd
- TQ Enviromental Plc
- Trafotek OY
- TRANSAS SCANDINAVIA AB
- TREADE AS
- Trelleborg Viking AS
- Trimat Ltd
- Tritex NDT Ltd
- TTS Handling Systems AS
- TTS Syncrolift AS Shipyard Solutions
- Tufnol Composites Ltd
- Tyne Gangway (Structures) Ltd
- Tysons Ships Riggers
- ULTRA FOG AB
- Uson Marine Group
- VALEPORT Limited
- VARHAUGS MARITIME DIESEL AS
- Vector Developments Ltd
- Ventiq AS
- VESTNES Ocean AS
- VESTTEKNIKK AS
- VIBRATEC AKUSTIKPRODUKTER AB
- Victor Marine Ltd
- VIDEO TECHNOLOGY GROUP AS
- VIKING LIFE-SAVING EQUIPMENT A/S
- Vimex AS
- VingCard Marine, VingCard Elsafe a.s.
- Virtek Communication AS
- Voith Safeset AB
- Volvo Penta (UK)
- WALTON ENGINEERING COMPANY Ltd.
- WARMAN INTERNATIONAL Ltd.
- Warren-Morrison Valves Ltd
- Wartsila (Hamworthy) Water Systems Ltd
- Wartsila Finland Oy
- Wartsila Krystallon Ltd
- WARTSILA Norway AS
- WATERMOTA LTD.
- Weber Marine
- Wencon ApS
- West Diesel Engineering AS
- WEST MEKAN PRODUKSJON AS
- Westad Industri AS
- WIDE INDUSTRIER AS
- WILHELMSEN MARINE ENGINEERING
- Willbrandt Gummiteknik ApS
- Wiper Solve Marine Ltd.
- WIRED OCEAN LIMITED
- Wolf Safety Lamp Co Ltd
- Woodsons of Aberdeen Ltd
- Worldwide Marine and Industrial Spares
- XTRONICA AS
- Young & Cunnigham Eddie Spence
- Zeework Ltd
- Zinaltec Oy