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The Scotch Marine Boiler is a firetube boiler, in that hot flue gases pass through tubes set within a tank of water. The general layout is that of a squat horizontal cylinder. One or more large cylindrical furnaces are in the lower part of the boiler shell. Above this is a large number of small-diameter fire-tubes. Gases and smoke from the furnace pass to the back of the boiler, then return through the small tubes and up and out of the chimney.

There are two basic designs for Scotch Marine Boilers. The typical design is the “wetback”, where the rear face of the combustion chamber is water-jacketed as a heating surface. The “dryback” variation has the rear of the combustion chamber as an open box, backed or surrounded only by a sheetmetal jacket. This simplifies construction, but also loses much efficiency.

Packaged Skid Boiler Solutions Available

Superior offers customized boiler skid packages for many types of steam and hot water boiler applications. Fully modular, skid-mounted units, single and multi-boiler, designed for an easy “single lift” installation.

Scotch Marine Boiler Product Line


  • Apache Scotch Marine Boiler

    Apache2-Pass Dryback Firetube Boiler

    Details
  • Dakota Dryback Boiler

    Dakota2 Pass Dryback Boiler

    Details
  • Mohawk Scotch Marine Boiler

    Mohawk3-Pass Dryback Firetube Boiler

    Details
  • Mohican Scotch Marine Boiler

    Mohican4-Pass Wetback Firetube Boiler

    Details
  • Ohio Scotch Marine Boiler

    Ohio Special2 or 3-Pass Dryback or Wetback Firetube Boiler

    Details
  • Seminole Scotch Marine Boiler

    Seminole3-Pass Wetback Firetube Boiler

    Details
  • Super Seminole Scotch Marine Boiler

    Super Seminole3-Pass Wetback Firetube Boiler

    Details
  • Wichita Wetback Boiler

    Wichita2-Pass Wetback Firetube Boiler

    Details

The Scotch Marine Boiler is a firetube boiler, in that hot flue gases pass through tubes set within a tank of water. The general layout is that of a squat horizontal cylinder. One or more large cylindrical furnaces are in the lower part of the boiler shell. Above this is a large number of small-diameter fire-tubes. Gases and smoke from the furnace pass to the back of the boiler, then return through the small tubes and up and out of the chimney.

There are two basic designs for Scotch Marine Boilers. The typical design is the “wetback”, where the rear face of the combustion chamber is water-jacketed as a heating surface. The “dryback” variation has the rear of the combustion chamber as an open box, backed or surrounded only by a sheetmetal jacket. This simplifies construction, but also loses much efficiency.

Packaged Skid Boiler Solutions Available

Superior offers customized boiler skid packages for many types of steam and hot water boiler applications. Fully modular, skid-mounted units, single and multi-boiler, designed for an easy “single lift” installation.

Scotch Marine Boiler Product Line