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SOMMER S
Photo by: Kyle Stubbs

Built in 2012 by Diversified Marine of Portland, Oregon as the Sommer S (hull #24) for the Shaver Transportation Company of Portland, Oregon.

Named in memory of Sommer Sondra Shaver, sister of company president Steve Shaver.

Her powerplant consists of two MTU M62 diesels driving twin four-blade, 96 (in) stainless steel propellors in Schottel Z-Drives, for a rated 5,364 horsepower.

Electrical load is provided for by two Cummins 6CTA 8.3 145kW generators.

The tug's towing gear is a Markey DEPCF-48 winch equipped with 500 (ft) of 8 (in) line.


  • Vessel Name: SOMMER S
  • USCG Doc. No.: 1231637
  • Vessel Service: TOWING VESSEL
  • IMO Number: 9669811
  • Trade Indicator: Coastwise Unrestricted
  • Call Sign: WDG3830
  • Hull Material: STEEL
  • Hull Number: 24
  • Ship Builder: DIVERSIFIED MARINE
  • Year Built: 2012
  • Length: 77.5
  • Hailing Port: PORTLAND OR
  • Hull Depth: 14.3
  • Hull Breadth: 36
  • Gross Tonnage: 267
  • Net Tonnage: 213
  • Owner:
    S 3 MARINE LLC
    4900 NW FRONT AVENUE
    PORTLAND, OR 97210
  • Previous Vessel Owners:
    SHAVER TRANSPORTATION COMPANY, S 3 MARINE LLC