Home :Products :Cat Engines and Transmissions :For Marine Applications

FOR MARINE APPLICATIONS

Industry-leading technology allows Caterpillar to create the most reliable commercial engines for a variety of applications. From tugs and container vessels to yachts and sport fishers, Cat and MaK engines have demonstrated their efficiency countless times. With remarkable reliability and durability, these engines will exceed your expectations for decades.

Commercial Propulsion Engines
C7.1 Tier 3 / IMO II

C7.1 Tier 3 / IMO II

Length 43.1 in
Minimum Rating 280 BHP
Height 35.1 in

C9.3 ACERT

C9.3 ACERT

Power Range 375-476 bhp (280-355 bkW)
Speed Range 1800-2300 rpm
Emissions EPA Tier 3 Commercial, IMO II, EU IW

C12

C12

Power Range 340-490 bhp (254-366 bkW)
Speed Range 1800-2300 rpm
Emissions IMO I, IMO II

C18 ACERT IMO II

C18 ACERT IMO II

Power Range 454-715 bhp (339-533 bkW)
Speed Range 1800-2100 rpm
Emissions IMO II, EU IIIA

C18 ACERT Tier 3

C18 ACERT Tier 3

Power Range 469-1001 bhp (350-747 bkW)
Speed Range 1800-2300 rpm
Emissions EPA Tier 3 Commercial, IMO II, EU IW

C32 ACERT IMO II

C32 ACERT IMO II

Power Range 660-1450 bhp (492-1081 bkW)
Speed Range 1600-2300 rpm
Emissions IMO II, EU IW

C32 ACERT Tier 3

C32 ACERT Tier 3

Power Range 750-1800 bhp (559-1342 bkW)
Speed Range 1600-2300 rpm
Emissions EPA Tier 3, IMO II, EU IW

C32 Tier 3 / IMO II

C32 Tier 3 / IMO II

6 Brick U-Flow - Width
Power Range 61-1450 bhp (46-1072 bkW)
Emissions U.S. EPA Tier 3 / IMO II emissions certified

C32 Tier 4 / IMO III

C32 Tier 4 / IMO III

6 Brick Z-Flow - Length 147.7 in
Minimum Length 83.9 in
6 Brick Z-Flow - Height 23.5 in

3508C

3508C

Power Range 775-1100 bhp (578-820 bkW)
Speed Range 1200-1600 rpm
Emissions IMO II, EU IW

3512C IMO II

3512C IMO II

Power Range 1280-2551 bhp (955-1902 bkW)
Speed Range 1200 rpm, 1600 rpm, 1800 rpm
Emissions IMO II, EU IW

3512C Tier 3

3512C Tier 3

Power Range 1340-2366 bhp (1000-1765 bkW)
Speed Range 1600-1800 rpm
Emissions EPA Tier 3, IMO II

3512E

3512E

Power Range 1341-2549 bhp (1000-1901 bkW)
Speed Range 1600-1800 rpm
Emissions U.S. EPA Tier 4 Final, IMO III

3516C IMO II

3516C IMO II

Power Range 1650-3386 bhp (1230-2525 bkW)
Speed Range 1200-1800 rpm
Emissions IMO II

3516C Tier 3

3516C Tier 3

Power Range 2131-2675 bhp (1590-1995 bkW)
Speed Range 1600 rpm
Emissions EPA Tier 3, IMO II

3516E

3516E

Power Range 2501-3386 bhp (1865-2525 bkW)
Speed Range 1600-1800 rpm
Emissions U.S. EPA Tier 4 Final, IMO III

C175-16

C175-16

Power Range 2683-3420 bhp (2001-2550 bkW)
Speed Range 1600-1800 rpm
Emissions IMO II

C280-6

C280-6

Power Range 2320-2722 bhp (1730-2030 bkW)
Speed Range 900-1000 rpm
Emissions IMO II

C280-8

C280-8

Power Range 3084-3393 bhp (2300-2530 bkW)
Speed Range 900 rpm
Emissions IMO II

C280-8 Tier 4

C280-8 Tier 4

Power Range 3299-3634 bhp (2460-2530 bkW)
Speed Range 1000 rpm
Emissions EPA Tier 4, IMO III

C280-12

C280-12

Power Range 4640-5096 bhp (3460-3800 bkW)
Speed Range 900 rpm
Emissions IMO II

C280-12 Tier 4

C280-12 Tier 4

Power Range 4962-5444 bhp (3700-4060 bkW)
Speed Range 1000 rpm
Emissions EPA Tier 4, IMO II

C280-16

C280-16

Power Range 6169-7577 bhp (4600-5650 bkW)
Speed Range 900-1000 rpm
Emissions IMO II



High Performance Propulsion and Maneuvering Solutions
C7.1

C7.1

Power Range 298 bkW - 373 bkW (400 bhp - 500 bhp)
Aspiration Turbocharged, aftercooled
Bore 4.13 in

C8.7

C8.7

Power Range 641 BHP
Aspiration TSA
Bore 4.6 in

C9 ACERT

C9 ACERT

Power Range 503-567 bhp (375-423 bkW)
Speed Range 2500 rpm
Emissions IMO II

C12

C12

Power Range 578-609 mhp (570-600 bhp)
Speed Range 2300 rpm
Emissions IMO I

C12 ACERT

C12 ACERT

Power Range 660-705 bhp (492-526 bkW)
Speed Range 2300 rpm
Emissions IMO II

C12.9

C12.9

Power Range 850-1000 mhp, 838-985 bhp, 625-735 bkW
Speed Range 2300 rpm
Emissions EPA Tier 3, IMO II, EU Stage IIIA

C18 ACERT Tier 3

C18 ACERT Tier 3

Power Range 814-1015 mhp, 803-1001 bhp, 599-747 bkW
Speed Range 2100-2300 rpm
Emissions EPA Tier 3, IMO II, EU Stage IIIA

C18 ACERT Tier 3 Recreational

C18 ACERT Tier 3 Recreational

Power Range 1015-1150 mhp, 1001-1136 bhp, 747-847 bkW
Speed Range 2300 rpm
Emissions EPA Tier 3, IMO II, EU IW

C32 ACERT Tier 3 Recreational

C32 ACERT Tier 3 Recreational

Power Range 1600-1900 bhp (1193-1417 bkW)
Speed Range 2300 rpm
Emissions EPA Tier 3, IMO II, EU IW

3512C HD

3512C HD

Power Range 1340-2366 bhp (1000-1765 bkW)
Speed Range 1600-1800 rpm
Emissions EPA Tier 3, IMO II



Marine Generator Sets
C1.5

C1.5

Minimum Rating 10 ekW (10 kVA)
Maximum Rating 13 ekW (16.5 kVA)
Frequency 50 Hz or 60 Hz

C2.2

C2.2

Minimum Rating 16 ekW (16kVA)
Maximum Rating 27 ekW (27 kVA)
Frequency 50 Hz or 60 Hz

C4.4

C4.4

Minimum Rating 36.0R ekW (45 kVA)
Maximum Rating 99.0 ekW (123 kVA)
Frequency 50 Hz or 60 Hz

C4.4 ACERT

C4.4 ACERT

Minimum Rating 58R ekW (50 Hz), 51R ekW (60 Hz)
Maximum Rating 88R ekW (50 Hz), 105R ekW (60 Hz)
Frequency 50 Hz or 60 Hz

C7.1

C7.1

Minimum Rating 100 ekW (125 kVA)
Maximum Rating 200 ekW (250 kVA)
Frequency 50 Hz or 60 Hz

C9.3 Marine Generator Set

C9.3 Marine Generator Set

Minimum Rating 185R ekW (231 kVA) at 50hz, 224R ekW (280 kVA) at 60hz
Maximum Rating 250R ekW (313 kVA) at 50hz, 300 ekW (375 kVA) at 60hz
Frequency 50 Hertz & 60 Hertz

C18 (SRMP) Marine Generator Set

C18 (SRMP) Marine Generator Set

Minimum Rating 260 ekW (325 kVA)
Maximum Rating 565 ekW (706 kVA)
Frequency 50 hz

C32 ACERT IMO II

C32 ACERT IMO II

Minimum Rating 550 eKW (688 kVA)
Maximum Rating 940 ekW (1175 kVA)
Frequency 50 Hz or 60 Hz

C32 ACERT Tier 3

C32 ACERT Tier 3

Minimum Rating 730 ekW (913 kVA)
Maximum Rating 940 ekW (1175 kVA)
Frequency 60hz

C32 Tier 3 / IMO II

C32 Tier 3 / IMO II

Minimum Rating 219 ekW
Maximum Rating 940 ekW
Frequency 60hz

C32 IMO III

C32 IMO III

Minimum Rating 219 ekW
Maximum Rating 940 ekW
Frequency 60hz

3512C

3512C

Minimum Rating 1550 eKW (1937 kVA)
Maximum Rating 1700 eKW (2125 kVA)
Frequency 60 hz

C280-6

C280-6

Minimum Rating 1760 ekW (2200 kVA)
Maximum Rating 1820 ekW (2275 kVA)
Frequency 50 Hz or 60 Hz

C280-8

C280-8

Minimum Rating 2350 ekW (2938 kVA)
Maximum Rating 2420 ekW (3025 kVA)
Frequency 50 Hz or 60 Hz

C280-12

C280-12

Minimum Rating 3520 ekW (4400 kVA)
Maximum Rating 3640 ekW (4550 kVA)
Frequency 50 Hz or 60 Hz

C280-16

C280-16

Minimum Rating 4700 ekW (5875 kVA)
Maximum Rating 4840 ekW (6050 kVA)
Frequency 50 Hz or 60 Hz



Auxiliary Engines
C7.1 Tier 3 / IMO II

C7.1 Tier 3 / IMO II

Length 43.1 in
Power Range 208 bkW (280 bhp) @ 2300 rpm
Height 35.1 in

C9.3 Auxiliary Engine

C9.3 Auxiliary Engine

Minimum Rating 292 BHP
Maximum Rating 436 BHP
Aspiration TA

C18 IMO II

C18 IMO II

Minimum Rating 404 BHP
Maximum Rating 660 BHP
Aspiration TA, TTA

C18 Tier 3

C18 Tier 3

Minimum Rating 624 BHP
Maximum Rating 803 BHP
Aspiration TA, TTA

C32 IMO II

C32 IMO II

Minimum Rating 791 BHP
Maximum Rating 1333 BHP
Aspiration TTA

C32 Tier 3

C32 Tier 3

Minimum Rating 1047 BHP
Maximum Rating 1333 BHP
Aspiration TTA

C32 Tier 3 / IMO II

C32 Tier 3 / IMO II

Minimum Rating 314 BHP
Maximum Rating 1333 BHP
Aspiration Turbocharged-aftercooled aspiration

C32 IMO III

C32 IMO III

Minimum Rating 352 BHP
Maximum Rating 1172 BHP
Aspiration Turbocharged-aftercooled aspiration

3512E

3512E

Power Range 732-2399 bhp (546-1789 bkW)
Aspiration TA
Emissions U.S. EPA Tier 4 Final, IMO III

3516E

3516E

Power Range 787-3175 bhp (587-2368 bkW)
Aspiration TA
Emissions U.S. EPA Tier 4 Final, IMO III

C280

C280

Minimum Rating 2320 BHP
Maximum Rating 7268 BHP
Aspiration TA