Tartan 37 Engine Repower / Replacement

Monohull Sailboats

Repower Specifications

LOA: 37.25’
LWL: 28.5’
DISPLACEMENT: 15,500 lbs
BUILDER: Tartan Marine


This racer/cruiser sloop or ketch was a versatile Sparkman & Stevens design. It is one of the most well regarded sailing vessel of its size. Certainly it is one of Tartans best efforts. Due to superior construction for its day, the Tartan 37 has held its value and demand in the market place.  This makes the Tartan 37 a popular vessel to own operate and repower.


Versions of the Perkins 4-108  &  4-107.  Westerbeke W-40 and W-50    

Repower Recommendations

The Beta 35 or 38 is a great engine replacement for the Tartan 37. It produces all the power required for excellent motoring and low speed handling, while also providing excellent efficiency.

Repower Recommendations

Beta Marine Custom engine mounts make for easy installation in this vessel. No changes to the original fiberglass engine beds are required.

Installation Considerations


  • Custom engine mounts that are built to your specifications will make this engine installation as straight forward as possible, without major modifications.
  •     Use the Beta stainless steel high rise exhaust elbow for best exhaust routing.
  •     The Tartan 37 calls for a steep shaft angle. Beta installation angle is 15° maximum and works just fine in this application. The dipstick should be remarked to work at that angle.

Other Resources

The Tartan 37 is one of the most common boats we repower with Beta Marine diesel engines. We have extensive experience with engine replacement on the  Tartan 37 and we have pictures, drawings and measurements for reference as well. Contact us to discuss your boat in more detail, or add to our forum discussion on this specific boat model through the link below.

Tartan 37 Engine Repower – Forum Discussion

Tartan 37 Owner’s Association

Tartan 37 Story Found in Cruising    

Tartan 37 Story Found in Practical Sailor


Key Search Terms:

Tartan 37 repower

Tartan 37 diesel engine

Tartan 37 engine replacement

Tartan 37 Beta Marine diesel

Perkins 4-108  Perkins 4-107.

Westerbeke W-40 Westerbeke W-50