- Sherwin Williams
- Sims Pump Valve Co Inc
- SOFEC, Inc.
- Spartan Industrial Marine
- Stang Industries Inc. & CounterFire LTD.
- Stephens-Adamson Division
- Superbolt, Inc.
- TAYLOR MACHINE WORKS, Inc.
- TDI Tech Development
- Tech Oil Products, Inc.
- Theriault International Marine
- Timberland Equipment Ltd
- TransWorld Equipment Corp
- TriCab (USA) Inc
- Umbilicals International
- Underwater Lights USA, LLC (Head office)
- Universal Marine Medical - USA Office
- Universal Silencer Shanghai Co. Ltd
- Vistar Night Vision Ltd
- W&O Supply
- Wartsila Hamworthy Inc (Houston)
- Wesco Industries Ltd
- Wilden Pump & Engineering Co
- WINSLOW LifeRaft Co Inc
- World Wide Metric Inc.