Thea Foss (starboard)

Model:6HM1558
Serial:
Bore:11½"
Stroke:15"
Cylinders:6
Horsepower:275
RPM:275
Current Owner:Foss Maritime Company
Current Location:Seattle, Washington
Current Condition:Operational

Engine History

The yacht Thea Foss is powered by twin 6HM1558 Atlas-Imperial diesel engines.

Engine Modifications

  • engine room controls have been replaced or altered to allow remote operation
  • de-rated from original factory specifications to produce 275 horsepower at 275 RPM