Reliable, Clean, Quiet – and Powerful.

Seaboard Marine offers a full line of both Commercial and Recreational Marine Diesel Engines, marine application engineering services and a Global Parts and Service network.

Cummins recreational propulsion engines from 5.9 to 11L offer advancements in diesel technology that give recreational boaters the freedom to cruise farther, enjoy a smoother, quieter ride with virtually no fumes and experience a level of power and fuel economy never before realized in diesel power. Whether you enjoy day cruises with your family, season-long excursions or sport fishing in the islands, you can count on Cummins power for maximum reliability, performance and safety.

Seaboard & Cummins also understands that every job is critical to keep your business on track. That’s why we offer a complete line of propulsion, generating set and auxiliary power solutions from 6.7 to 95 L designed specifically for the challenges of commercial marine applications. For more information on Cummins commercial marine engines, please contact Seaboard Marine.

EPA Tier 3 Engine Quotation


Recreational and Commercial Propulsion

Cummins QSB 5.9

QSB 5.9 for Marine

The QSB 5.9 is EPA T2 and is only currently available as a FACTORY NEW “RECON”

Power230 – 480 hp
Torque510 – 942 lb-ft

Cummins QSB 6.7

QSB 6.7 for Marine

Power230 – 550 hp
Torque720 – 1250 lb-ft

Cummins QSC 8.3

QSC 8.3 for Marine

Power490 – 600 hp
Torque1327 lb-ft

QSL 9 for Marine

Power290 – 410 hp
Torque1064 – 1162 lb-ft

QSM 11 for Marine

Power300 – 715 hp
Torque1160 – 1750 lb-ft