- Stromag AG
- STS Sensoren Transmitter Systeme GmbH
- STT International Ltd.
- Sulzer Pumpen (Deutschland) GmbH
- Sun Marine Seats BV
- Superbolt, Inc.
- SUPON SA
- SURVITEC GROUP LIMITED
- T&E Engineering BV
- T-ISS Solastape BV
- TAMEL SA
- TAV Engineering Ltd
- TAYLOR MACHINE WORKS, Inc.
- TC Tomasz Wojdala
- TDI Tech Development
- Tech Oil Products, Inc.
- TECHFLOW MARINE Ltd.
- Technical Service
- Tecnomagnete S.p.A.
- Teekay Couplings Ltd.
- Teignbridge Propellers International Ltd
- TEMARO The Dutch Marine Suppliers
- TENMAT Ltd.
- Terasaki Electric Europe Ltd
- Testo AG
- THB Verhoef bv
- Theunissen Technical Trading BV
- THR Marine
- Thrustmaster Europe B.V. (TMEUR)
- Tideland Signal Ltd
- Tides Marine International Limited
- TMS ENDUSTRIYEL SOGUTMA VE ISLEM TEKNOLOJILERI LTD. STI.
- Tools & Pumps Trading Centre BV
- torbo Engineering Keizers GmbH
- Torque Marine IPS Innovative Propulsion Systeme GmbH & Co. KG
- Total Filtration Ltd
- TOWIMOR SA
- TQ Enviromental Plc
- TQC GmbH
- TRAFA BV
- TRAFAG AG
- TRANSAS SCANDINAVIA AB
- Transfluid Srl
- TransWorld Equipment Corp
- TRANTER INTERNATIONAL AB
- TRANZAS EVRAZIJA
- TriCab (USA) Inc
- Trimat Ltd
- Tritex NDT Ltd
- TTS Marine ASA
- TTS Marine s.r.l.
- Tubes International Sp. z o.o.
- Tufnol Composites Ltd
- TUNA Ship Supply Ltd. Co.
- Tyne Gangway (Structures) Ltd
- Tysons Ships Riggers
- ULTRA FOG AB
- Umbilicals International
- Underwater Lights USA, LLC (Head office)
- UNI MEBEL SC
- Unicont Spb Co., Ltd.
- Unimor Marine
- UnionStahl Nord GmbH
- UNIservice SAFETY srl
- Unitex Group
- Universal Marine Medical - USA Office
- Universal Silencer Shanghai Co. Ltd
- UNOKS ENDUSTRIYEL MUTFAK URUNLERI SANAYI VE TICARET Ltd. Sti.
- Uralgrit LLC
- URET MECHANICAL HEAT INSTALLATION TRADE LTD
- Uson Marine Group
- Vaf Instruments B.V.
- Valcom S.r.l.
- 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
- VDL KLIMA B.V.
- Vecom Group B.V.
- Vector Developments Ltd
- VEINLAND GmbH
- Versitec Europe B.V.
- Veth Propulsion
- VETUS
- VIBRATEC AKUSTIKPRODUKTER AB
- Vicinay Cadenas SA
- Victor Marine Ltd
- VIGOT GmbH
- VIR VALVOINDUSTRIA ING. RIZZIO S.p.A.
- VIRA DENIZCILIK
- Vistar Night Vision Ltd
- Voith Safeset AB
- Volvo Penta (UK)
- Vryhof Anchors B.V.