- STOP CHOC Schwingungstechnik GmbH
- STORK KWANT BV
- Stromag AG
- STS Sensoren Transmitter Systeme GmbH
- STT International Ltd.
- Sulzer Pumpen (Deutschland) GmbH
- Sun Marine Seats BV
- Superbolt, Inc.
- SURVITEC GROUP LIMITED
- Svend Hoyer A/S
- SYBERG AS
- T&E Engineering BV
- T-ISS Solastape BV
- TAMROTOR MARINE COMPRESSOS AS
- TAV Engineering Ltd
- TAYLOR MACHINE WORKS, Inc.
- TDI Tech Development
- TEAMTEC A/S
- Tech Oil Products, Inc.
- TECHFLOW MARINE Ltd.
- Technical Service
- TECO MARITIME ASA
- Teekay Couplings Ltd.
- Teignbridge Propellers International Ltd
- TEMARO The Dutch Marine Suppliers
- TENMAT Ltd.
- Testo AG
- THANNER AND Co.
- THB Verhoef bv
- Theriault International Marine
- Theunissen Technical Trading BV
- THR Marine
- THRANE & THRANE A/S
- Thrustmaster Europe B.V. (TMEUR)
- Thyboron Skibssmedie
- Tideland Signal Ltd
- Tides Marine International Limited
- Timberland Equipment Ltd
- Tools & Pumps Trading Centre BV
- torbo Engineering Keizers GmbH
- Torque Marine IPS Innovative Propulsion Systeme GmbH & Co. KG
- Total Filtration Ltd
- TQ Enviromental Plc
- TQC GmbH
- TRAFA BV
- TRANSAS SCANDINAVIA AB
- TransWorld Equipment Corp
- TREADE AS
- Trelleborg Viking AS
- TriCab (USA) Inc
- Trimat Ltd
- Tritex NDT Ltd
- TTS Handling Systems AS
- TTS Marine ASA
- TTS Syncrolift AS Shipyard Solutions
- Tufnol Composites Ltd
- Twin Disc International SA
- Tyne Gangway (Structures) Ltd
- Tysons Ships Riggers
- ULTRA FOG AB
- Umbilicals International
- Underwater Lights USA, LLC (Head office)
- UnionStahl Nord GmbH
- Unitex Group
- Universal Marine Medical - USA Office
- Universal Silencer Shanghai Co. Ltd
- Uson Marine Group
- Vaf Instruments B.V.
- VALEPORT Limited
- Valveco logistics & services B.V.
- VAN AALST MARINE & OFFSHORE BV
- VAN BEEST BV
- Van Bodegraven Elektromotoren B.V.
- Van der Velden Barkemeyer GmbH
- Van Leeuwen Buizen Groep
- Van Lessen en Punt Holding B.V.
- Van Leusden BV
- Van Voorden Gieterij BV
- VARHAUGS MARITIME DIESEL AS
- VDL KLIMA B.V.
- Vecom Group B.V.
- Vector Developments Ltd
- VEINLAND GmbH
- Ventiq AS
- Versitec Europe B.V.
- Vesco Plastics
- VESTNES Ocean AS
- VESTTEKNIKK AS
- Veth Propulsion
- VETUS
- VIBRATEC AKUSTIKPRODUKTER AB
- Vicinay Cadenas SA
- Victor Marine Ltd
- VIDEO TECHNOLOGY GROUP AS
- Vigan Engineering SA
- VIGOT GmbH
- VIKING LIFE-SAVING EQUIPMENT A/S
- Vimex AS
- VingCard Marine, VingCard Elsafe a.s.
- Virtek Communication AS