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DCEC Marine Engine

No matter using as marine main engines, or using as marine auxiliary engines, DCEC marine engines are able provide increased power-to-weight ratios, cleaner starts and less noise. DCEC marine engines provides B, C, L series engine for customers to choose. DCEC marine engines covering displacement from 3.9 to 8.9 liters, with power range from 47 kW to 253 kW.
DCEC employs an experienced team of technical and market experts focused on the marine industry and its customers. Factory trained Marine Application Engineers will help you select the right spec for your vessel and Qualified Marine Technicians keep you up and running once in service.
DCEC offers a complete line of propulsion, generating set and auxiliary power solutions designed specifically for the challenges of marine applications. Because
we understand customer needs and operating conditions vary, SeaMac also offer custom generator set packaging with various different classification societies.
Our in-house engineering experts provides custom complete solutions from marine main engine, gearbox, main shaft, propeller and complete generator set. Based on customer’s requirement, SeaMac provides one-stop solutions covers from pre-design to components supply, from installation to commissioning, from pre-sales communication to after-sales service support, Our one-stop solution not only significant improve operation efficiency, but also help customers to aviod mismatching problems caused by multiple independent suppliers of different components, which often caused lot of troubles for shipyards.
All of DCEC marine auxiliary engines and generator set are available for an unlimited number of hours per year in variable load applications. Variable load is not to exceed a 70 percent average of the rated power during any operating period of 250 hours. Total operating time at 100 percent Prime Power shall not exceed 500 hours per year.

Advantages of Marine Engine

A 10 percent overload capability is available for a period of one hour within a 12 hour period of operation. Total operating time at the 10 percent overload power shall not exceed 25 hours per year. This power rating conforms to ISO 8528 guidelines.
Based on DCEC marine engines, Seamac provides fully integrated support at all stages of a new build or repower project, from vessel concept to installation, commissioning and sea trial. We work closely with partner suppliers, including gear manufacturers and system integrators to ensure proper engine selection, application and installation. Seamac, your reliable one-stop marine propulsion and power system solution provider.

6BT5.9 Marine Main 120-150 HP
6CTA8.3 Marine Main 188-254 HP
6LTAA8.9 Marine Main 300-315 HP
QSL8.9 Marine Main 308 HP
4BT3.9 Marine Auxiliary 47-65 kW
6BT5.9 Marine Auxiliary 80-132 kW
6CTA8.3 Marine Auxiliary 115-175 kW
6LTAA8.9 Marine Auxiliary 200-215 kW
B5.9CMIII-GM Marine Auxiliary 100-115 kW
L8.9CMIII-GM Marine Auxiliary 155-200 kW

Engine Model

Power/HP & kW

0 50 100 150 200 250 300 350
Emission Srandard:Euro ⅠEuro ⅡEuro ⅢEuro ⅣEuro ⅤEuro ⅥEuro Ⅶ
DCEC Marine Auxiliary Engine Catalogue
Series
Model
4BT3.9 Marine Auxiliary
1100 mm * 800 mm * 1200 mm
Euro ll
4BTA3.9-GM47 | 47 kW @ 1500 RPM 4BTA3.9-GM65 | 65 kW @ 1800 RPM
6BT5.9 Marine Auxiliary
1182 mm * 761 mm * 1127 mm
Euro ll
6BT5.9-GM80 | 80 kW @ 1500 RPM 6BT5.9-GM83 | 83 kW @ 1500 RPM 6BT5.9-GM100 | 100 kW @ 1800 RPM 6BTA5.9-GM100 | 100 kW @ 1500 RPM
6BTA5.9-GM120 | 120 kW @ 1800 RPM 6BTAA5.9-GM115 | 115 kW @ 1500 RPM
6CTA8.3 Marine Auxiliary
1494 mm * 796 mm * 1228 mm
Euro ll
6CT8.3-GM115 | 115 kW @ 1500 RPM 6CT8.3-GM129 | 129 kW @ 1800 RPM 6CTA8.3-GM155 | 155 kW @ 1500 RPM 6CTA8.3-GM175 | 175 kW @ 1800 RPM
6LTAA8.9 Marine Auxiliary
1400 mm * 900 mm * 1100 mm
Euro ll
6LTAA8.9-GM200 |200 kW @ 1500 RPM 6LTAA8.9-GM215 | 215 kW @ 1800 RPM
B5.9CMIII-GM Marine Auxiliary Engine
102 mm*120 mm
Euro Stage II
B5.9CMII136G | 147 BHP @ 1500 RPM B5.9CMII156G | 170 BHP @ 1500 RPM
L8.9CMIII-GM Marine Auxiliary Engine
114 mm*145 mm
Euro Stage II
L8.9CMII211G | 295 BHP @ 1500 RPM L8.9CMII272G | 229 BHP @ 1500 RPM
——END——

Find Marine Engines by Series

This is the list of all series of DCEC marine engines.
Click here to find marine engines by type (Fuel System & Power Range).

4BTA3.9-GM47 Auxiliary Engine Parts

4BTA3.9-GM47 Auxiliary Engine Parts

Rated Power: 47 kW @ 1500 RPM
Max. Torque: 214 g / kW.h @ 1500 RPM
Fuel Pump: BYC A Pump
Governor: GAC 24 V Mech.
Aspiration: TC & Water-Air Intercooler

4BTA3.9-GM47 Auxiliary Engine Parts

4BTA3.9-GM65 Auxiliary Engine Parts

Rated Power: 65 kW @ 1800 RPM
Max. Torque: 219 g / kW.h @ 1800 RPM
Fuel Pump: BYC A Pump
Governor: GAC Mech.
Aspiration: TC & Water-Air Intercooler

6BT5.9-GM80 Auxiliary Engine

6BT5.9-GM80 Auxiliary Engine

Rated Power: 80 kW @ 1500 RPM
Max. Torque: 216 g / kw.h @ 1500 RPM
Fuel Pump: BYC PB Pump
Governor: GAC 24 V Mech.
Aspiration: Turbocharger

6BTA5.9-GM100 Auxiliary Engine Parts

6BTA5.9-GM100 Auxiliary Engine Parts

Rated Power: 100 kW @ 1500RPM
Max. Torque: 213 g / kw.h @ 1500 RPM
Fuel Pump: BYC A Pump
Governor: GAC Mech.
Aspiration: TC & Water-Air Intercooler

6BTA5.9-GM120 Auxiliary Engine

6BTA5.9-GM120 Auxiliary Engine

Rated Power: 120 kW @ 1800RPM
Max. Torque: 213 g / kw.h @ 1800RPM
Fuel Pump: BYC A Pump
Governor: GAC Mech.
Aspiration: TC & Water-Air Intercooler

6BT5.9-GM80 Auxiliary Engine

6BTAA5.9-GM115 Auxiliary Engine

Rated Power: 115 kW @ 1500RPM
Max. Torque: 212 g / kw.h @ 1500 RPM
Fuel Pump: BYC PB Pump
Governor: GAC Mech.
Aspiration: TC & Air-Air Intercooler

6CT8.3-GM115 Auxiliary Engine

6CT8.3-GM115 Auxiliary Engine

Rated Power: 115 kW @ 1500 RPM
Max. Torque: 212 g / kW.h @ 1500 RPM
Fuel Pump: BYC PB Pump
Governor: GAC Mech.
Aspiration: Turbocharger

6CT8.3-GM115 Auxiliary Engine

6CT8.3-GM129 Auxiliary Engine

Rated Power: 129 kW @ 1800 RPM
Max. Torque: 222 g / kW.h @ 1800 RPM
Fuel Pump: BYC PB Pump
Governor: GAC 24 V Mech.
Aspiration: Turbocharger

6CT8.3-GM115 Auxiliary Engine

6CTA8.3-GM155 Auxiliary Engine Parts

Rated Power: 155 kW @ 1500 RPM
Max. Torque: 214 g / kW.h @ 1500 RPM
Fuel Pump: BYC PB Pump
Governor: GAC Mech.
Aspiration: TC & Water-Air Intercooler

6CT8.3-GM115 Auxiliary Engine

6CTA8.3-GM175 Auxiliary Engine

Rated Power: 175 kW @ 1800 RPM
Max. Torque: 218 g / kW.h @ 1800 RPM
Fuel Pump: BYC P7100 Pump
Governor: GAC 24 V Mech.
Aspiration: TC & Water-Air Intercooler

6LTAA8.9-GM200 Auxiliary Engine

6LTAA8.9-GM200 Auxiliary Engine

Rated Power: 200 kW @ 1500 RPM
Max. Torque: 206 g / kW.h @ 1500 RPM
Fuel Pump: BYC P7100 Pump
Governor: GAC 24 V Mech.
Aspiration: TC & Air-Air Intercooler

6LTAA8.9-GM215 Auxiliary Engine

6LTAA8.9-GM215 Auxiliary Engine

Rated Power: 215 kW @ 1800 RPM
Max. Torque: 212 g / kW.h @ 1800 RPM
Fuel Pump: BOSCH P7100 Pump
Governor: RQV_K FORTRUST Mech.
Aspiration: TC & Air-Air Intercooler

6BT5.9-M120 Marine Engine Parts

6BT5.9-M120 Marine Engine Parts

Rated Power: 120 HP @ 2200 RPM
Max. Torque: 430N.m @ 1600 RPM
Fuel Pump: Weifu AD Pump
Governor: RSV Mech.
Aspiration: Turbocharger

6BTA5.9-M150 Marine Engine Parts

6BTA5.9-M150 Marine Engine Parts

Rated Power: 150 HP @ 2200 RPM
Max. Torque: 616 N.m @ 1400 RPM
Fuel Pump: Weifu AD Pump
Governor: RSV Mech.
Aspiration: TC & Water-Air Intercooler

6CTA8.3-M188 Marine Engine Parts

6CTA8.3-M188 Marine Engine Parts

Rated Power: 188 Hp @ 2328 RPM
Max. Torque: 732 N.m @ 1500 RPM
Fuel Pump: BYC PB Pump
Governor: R801 Mech.
Aspiration: TC & Water-Air Intercooler

6CTA8.3-M205 Marine Engine Parts

6CTA8.3-M205 Marine Engine Parts

Rated Power: 205 Hp @ 2328 RPM
Max. Torque: 828 N.m @ 1500 RPM
Fuel Pump: BYC PB Pump
Governor: R801 Mech.
Aspiration: TC & Water-Air Intercooler

6CTA8.3-M220 Marine Engine Parts

6CTA8.3-M220 Marine Engine Parts

Rated Power: 220 Hp @ 1800 RPM
Max. Torque: 1000 N.m @ 1500 RPM
Fuel Pump: BYC PB Pump
Governor: RSV Mech.
Aspiration: TC & Water-Air Intercooler

6CTAA8.3-M260 Marine Engine

6CTAA8.3-M260 Marine Engine

Rated Power: 254 HP @ 2134 RPM
Max. Torque:1125 N.m @ 1400 RPM
Fuel Pump: Weifu PW2000 Pump
Governor: RQV-K Mech.
Aspiration: TC & Air-Air Intercooler

Review SAUDI RAIL 2025 :SinoMac Exhibition Highlights

Review SAUDI RAIL 2025 :SinoMac Exhibition Highlights

SinoMac successfully participated in SAUDI RAIL 2025, the annual industry event held in Riyadh, Saudi Arabia, from October 19th to 20th, 2025. At the exhibition, SinoMac showcased its strong capabilities in railway technology, innovative solutions, and full lifecycle services, and engaged in in-depth exchanges with industry partners, customers, and experts from around the world to jointly explore future opportunities for rail transit development in the Middle East.
Global Exhibition, SinoMac
SinoMac, Global Exhibition

6LTAA8.9-M300 Marine Engine

6LTAA8.9-M300 Marine Engine

Rated Power: 300 kW @ 1800 RPM
Max. Torque: 1295 N.m @ 1800 RPM
Fuel Pump: Weifu PW2000 Pump
Governor: RQV_K Mech.
Aspiration: TC & Air-Air Intercooler

6LTAA8.9-M315 Marine Engine Parts

6LTAA8.9-M315 Marine Engine Parts

Rated Power: 315 kW @ 2134 RPM
Max. Torque: 1350 N.m @ 1400 RPM
Fuel Pump: Pausch P7100 Pump
Governor: RQV–K Mech.
Aspiration: TC & Air-Air Intercooler

QSL8.9-M313 Marine Engine

QSL8.9-M313 Marine Engine

Rated Power: 308 HP @ 2200 RPM
Max. Torque: 998 N.m @ 2200 RPM
Fuel Pump: HPCR
Aspiration: Turbocharger

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