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OUR FLEET

OUR FLEET

OUR FLEET

Mainstay Maritime operates the
largest and most flexible fleet of dry bulk
and liquid carriers in the Great Lakes.

Mainstay Maritime operates the
largest and most flexible fleet of dry bulk
and liquid carriers in the Great Lakes.

Mainstay Maritime operates the largest and most flexible fleet of dry bulk and liquid carriers in the Great Lakes.

Through our subsidiaries, Mainstay operates a fleet of eleven self-unloading bulk carriers, including three tug/barge units, and three conventional bulk carriers, both Canadian and U.S. flagged with safety as our first priority. Mainstay is a market leader in the Class I and River Class vessel segment and is the only carrier able to offer significant domestic port-to-port services in both Canada and the U.S. on the Great Lakes. The Company’s vessels operate under the U.S. Jones Act—which reserves domestic waterborne commerce to vessels that are U.S. owned, built and crewed—and the Canada Coasting Trade Act—which reserves domestic waterborne commerce to Canadian registered and crewed vessels that operate between Canadian ports.

We take pride in our world class safety record, exemplary maritime and technical expertise, and the unmatched efficiency and flexibility of our operations. Boat watchers travel miles to view the ships in operation, since many of the vessels have a unique history within the Great Lakes maritime industry.

CLASS I

Class One vessels are exclusively 1000' long and have a 105' beam, the largest on the Lakes. These assets carry the largest loads for our customers.

CLASS II

Class Two vessels within our fleet range from 815' to 680' and have a beam of 78'. They have carrying capacity between 24k and 35k tons depending on the vessel. These assets excel at efficient moves over longer distances.

CLASS III

Class Three vessels within our fleet range from 730' to 630' and have a beam of 68' to 70'. They have a carrying capicity between 18k to 30k tons depending on the vessel. These assets can go in tight waterways and are highly navigable.

SPECIALTY

Our fleet of assets allows for safe and efficient movement of liquid and specialty cargos across the entiretly of the Great Lakes.

OUR FLEET

Length

1000′


Beam

105′


Depth

56′


Midsummer draft (MS)

34′ 3/4″


Deadweight capacity at MS draft

80,900 Gross tons


Deadweight capacity at 27′ 6″

62,100 Gross tons


Unloading boom conveyor length

250′


Maximum unloading rate

10,000 Tons/hour


Number of cargo holds

7


Number of hatches

37


Shaft horsepower

14,000


Year built

1981


Number of propellers

2

Length

1000′


Beam

105′


Depth

56′


Midsummer draft (MS)

34′ 3/4″


Deadweight capacity at MS draft

80,900 Gross tons


Deadweight capacity at 27′ 6″

62,100 Gross tons


Unloading boom conveyor length

250′


Maximum unloading rate

10,000 Tons/hour


Number of cargo holds

7


Number of hatches

37


Shaft horsepower

14,000


Year built

1981


Number of propellers

2

Length 

634' 10"


Beam

68'


Depth 

40'


Midsummer draft 

27' 11 7/8"


Unloading boom length

250'


Unload rate 

6,000 nt/hr


Capacity 

24,300 gross tons


Cubic capacity

692,324 cubic feet


Operating speed

15 mph

Length 

634' 10"


Beam

68'


Depth 

40'


Midsummer draft 

27' 11 7/8"


Unloading boom length

250'


Unload rate 

6,000 nt/hr


Capacity 

24,300 gross tons


Cubic capacity

692,324 cubic feet


Operating speed

15 mph

Length

1000′


Beam

105′


Depth

56′


Midsummer draft (MS)

34′ 3/4″


Deadweight capacity at MS draft

80,900 gross tons


Deadweight capacity at 27′ 6″

62,100 gross tons


Unloading boom conveyor length

250′


Maximum unloading rate

10,000 tons/hour


Number of cargo holds

7


Number of hatches

37


Shaft horsepower

14,000


Year built

1978


Number of propellers

2

Length

1000′


Beam

105′


Depth

56′


Midsummer draft (MS)

34′ 3/4″


Deadweight capacity at MS draft

80,900 gross tons


Deadweight capacity at 27′ 6″

62,100 gross tons


Unloading boom conveyor length

250′


Maximum unloading rate

10,000 tons/hour


Number of cargo holds

7


Number of hatches

37


Shaft horsepower

14,000


Year built

1978


Number of propellers

2

Length (tug and barge) 

730'


Beam

78'


Depth 

45'

Midsummer draft 

30' 10 7/8″


Unloading boom length

250'


Unload rate 

6,000 tons/hour


Capacity 

37,300 gross tons


Cubic capacity

1,094,040 cubic feet


Operating speed

15 mph

Length (tug and barge) 

730'


Beam

78'


Depth 

45'

Midsummer draft 

30' 10 7/8″


Unloading boom length

250'


Unload rate 

6,000 tons/hour


Capacity 

37,300 gross tons


Cubic capacity

1,094,040 cubic feet


Operating speed

15 mph

Length

1004′


Beam

105′


Depth

50′


Midsummer draft (MS)

28′ 10 3/4″


Deadweight capacity at MS draft

62,400 gross tons


Deadweight capacity at 27′ 6″

58,400 gross tons


Unloading boom conveyor length

260′


Maximum unloading rate

10,000 tons/hour


Number of cargo holds

7


Number of hatches

36


Shaft horsepower

16,000


Year built

1978


Number of propellers

2

Length

1004′


Beam

105′


Depth

50′


Midsummer draft (MS)

28′ 10 3/4″


Deadweight capacity at MS draft

62,400 gross tons


Deadweight capacity at 27′ 6″

58,400 gross tons


Unloading boom conveyor length

260′


Maximum unloading rate

10,000 tons/hour


Number of cargo holds

7


Number of hatches

36


Shaft horsepower

16,000


Year built

1978


Number of propellers

2

Length (tug and barge)

705'


Beam

78'


Depth

51'


Midsummer draft

30'


Unloading boom length

250'


Unload rate

3,500 nt/hr


Capacity

31,800 tons


Cubic capacity

867,644


Operating speed

12.8 mph


Length (tug and barge)

705'


Beam

78'


Depth

51'


Midsummer draft

30'


Unloading boom length

250'


Unload rate

3,500 nt/hr


Capacity

31,800 tons


Cubic capacity

867,644


Operating speed

12.8 mph


Length

1000′


Beam

105′


Depth

56′


Midsummer draft (MS)

34′ 3/4″


Deadweight capacity at MS draft

80,900 gross tons


Deadweight capacity at 27′ 6″

62,100 gross tons


Unloading boom conveyor length

250′


Maximum unloading rate

10,000 tons/hour


Number of cargo holds

7


Number of hatches

37


Shaft horsepower

14,000


Year built

1980


Number of propellers

2

Length

1000′


Beam

105′


Depth

56′


Midsummer draft (MS)

34′ 3/4″


Deadweight capacity at MS draft

80,900 gross tons


Deadweight capacity at 27′ 6″

62,100 gross tons


Unloading boom conveyor length

250′


Maximum unloading rate

10,000 tons/hour


Number of cargo holds

7


Number of hatches

37


Shaft horsepower

14,000


Year built

1980


Number of propellers

2

Length

630'


Beam

68'


Depth

37'


Midsummer draft

26'


Unloading boom length

260'


Unload rate

5,000 nt/hr


Capacity

19,600 tons


Cubic capacity

569,000


Operating speed

14 mph


Length

630'


Beam

68'


Depth

37'


Midsummer draft

26'


Unloading boom length

260'


Unload rate

5,000 nt/hr


Capacity

19,600 tons


Cubic capacity

569,000


Operating speed

14 mph


Length

360′


Width

60'


Loaded draft

19' 06"


Capacity

51,942 Barrels

Length

360′


Width

60'


Loaded draft

19' 06"


Capacity

51,942 Barrels

Length

300′


Width

60'


Loaded draft

19'


Capacity

36,475 Barrels

Length

300′


Width

60'


Loaded draft

19'


Capacity

36,475 Barrels

Length (tug and barge) 

704'


Beam

78'


Depth 

45'


Midsummer draft 

30′ 7 5/8″


Unloading boom length

250'


Unload rate 

6,000 nt/hr


Capacity 

35,400 gross tons


Cubic capacity

1,018,024 cubic feet


Operating speed

15 mph

Length (tug and barge) 

704'


Beam

78'


Depth 

45'


Midsummer draft 

30′ 7 5/8″


Unloading boom length

250'


Unload rate 

6,000 nt/hr


Capacity 

35,400 gross tons


Cubic capacity

1,018,024 cubic feet


Operating speed

15 mph

Length

1000′


Beam

105′


Depth

56′


Midsummer draft (MS)

34′ 3/4″


Deadweight capacity at MS draft

80,900 gross tons


Deadweight capacity at 27′ 6″

62,100 gross tons


Unloading boom conveyor length

250′


Maximum unloading rate

10,000 tons/hour


Number of cargo holds

7


Number of hatches

37


Shaft horsepower

14,000


Year built

1979


Number of propellers

2

Length

1000′


Beam

105′


Depth

56′


Midsummer draft (MS)

34′ 3/4″


Deadweight capacity at MS draft

80,900 gross tons


Deadweight capacity at 27′ 6″

62,100 gross tons


Unloading boom conveyor length

250′


Maximum unloading rate

10,000 tons/hour


Number of cargo holds

7


Number of hatches

37


Shaft horsepower

14,000


Year built

1979


Number of propellers

2

Length (tug and barge) 

680'


Beam

78'


Depth 

45'


Midsummer draft 

30′ 7 5/8″


Unloading boom length

250'


Unload rate 

5,000 nt/hr


Capacity 

34,000 gross tons


Cubic capacity

973,349 cubic feet


Operating speed

14.5 mph

Length (tug and barge) 

680'


Beam

78'


Depth 

45'


Midsummer draft 

30′ 7 5/8″


Unloading boom length

250'


Unload rate 

5,000 nt/hr


Capacity 

34,000 gross tons


Cubic capacity

973,349 cubic feet


Operating speed

14.5 mph

Length 

730'


Beam

75"


Depth 

48


Midsummer draft 

33' 06"


Unloading boom length

n/a


Unload rate 

n/a


Capacity 

33,824 tons


Cubic capacity

1,622,780


Operating speed

11.7 knots

Length 

730'


Beam

75"


Depth 

48


Midsummer draft 

33' 06"


Unloading boom length

n/a


Unload rate 

n/a


Capacity 

33,824 tons


Cubic capacity

1,622,780


Operating speed

11.7 knots

Length

112′


Gross tons

516


Horsepower

4000

Length

112′


Gross tons

516


Horsepower

4000

Length 

664'


Beam

78'


Depth 

45'


Midsummer draft 

30'


Unloading boom length

265'


Unload rate 

4,800 nt/hr


Capacity 

27,550 tons


Cubic capacity

1,074,181 


Operating speed

14.2 knots

Length 

664'


Beam

78'


Depth 

45'


Midsummer draft 

30'


Unloading boom length

265'


Unload rate 

4,800 nt/hr


Capacity 

27,550 tons


Cubic capacity

1,074,181 


Operating speed

14.2 knots

Length

630'


Beam

68'


Depth

37'


Midsummer draft

26'


Unloading boom length

260'


Unload rate

5,000 nt/hr


Capacity

19,600 tons


Cubic capacity

569,000


Operating speed

14 mph

Length

630'


Beam

68'


Depth

37'


Midsummer draft

26'


Unloading boom length

260'


Unload rate

5,000 nt/hr


Capacity

19,600 tons


Cubic capacity

569,000


Operating speed

14 mph

Length (tug and barge) 

815' 02"


Beam

70'


Depth 

36'


Midsummer draft

22' 03"


Unloading boom length

260'


Unload rate 

5,000 nt/hr


Capacity

25,500 tons


Cubic capacity

784,395


Operating speed

12.08 mph


Length (tug and barge) 

815' 02"


Beam

70'


Depth 

36'


Midsummer draft

22' 03"


Unloading boom length

260'


Unload rate 

5,000 nt/hr


Capacity

25,500 tons


Cubic capacity

784,395


Operating speed

12.08 mph


Length (tug and barge)

728'


Beam

70'


Depth

37'

Midsummer draft

22' 03"


Unloading boom length

250'


Unload rate

5,000 nt/hr


Capacity

21,000 tons


Cubic capacity

544,870


Operating spreed

9.5 mph

Length (tug and barge)

728'


Beam

70'


Depth

37'

Midsummer draft

22' 03"


Unloading boom length

250'


Unload rate

5,000 nt/hr


Capacity

21,000 tons


Cubic capacity

544,870


Operating spreed

9.5 mph

Length 

698'


Beam

70'


Depth 

37'


Midsummer draft 

26' 06"


Unloading boom length

250'


Unload rate 

4,800 nt/hr


Capacity 

22,000 tons


Cubic capacity

544,870


Operating speed

13.8 knots

Length 

698'


Beam

70'


Depth 

37'


Midsummer draft 

26' 06"


Unloading boom length

250'


Unload rate 

4,800 nt/hr


Capacity 

22,000 tons


Cubic capacity

544,870


Operating speed

13.8 knots

Length

112.6′


Gross tons

433


Horsepower

3600

Length

112.6′


Gross tons

433


Horsepower

3600

Length

630'


Beam

68'


Depth 

37'


Midsummer draft 

26'


Unloading boom length

260'


Unload rate 

2,000 nt/hr


Capacity 

19,600 tons


Cubic capacity

519,970


Operating speed

11.5 knots

Length

630'


Beam

68'


Depth 

37'


Midsummer draft 

26'


Unloading boom length

260'


Unload rate 

2,000 nt/hr


Capacity 

19,600 tons


Cubic capacity

519,970


Operating speed

11.5 knots

Length 

640'


Beam

72'


Depth 

36'


Midsummer draft 

26' 02"


Unloading boom length

250'


Unload rate 

3,500 nt/hr


Capacity 

21,500 tons


Cubic capacity

708,610


Operating speed

13 knots

Length 

640'


Beam

72'


Depth 

36'


Midsummer draft 

26' 02"


Unloading boom length

250'


Unload rate 

3,500 nt/hr


Capacity 

21,500 tons


Cubic capacity

708,610


Operating speed

13 knots

Length (tug and barge) 

634′ 1″


Beam

68'


Depth 

40′


Midsummer draft 

27' 11 7/8″


Unloading boom length

250'


Unload rate 

5,000 nt/hr


Capacity 

24,300 gross tons


Cubic capacity

692,324 cubic feet


Operating speed

15.2 mph

Length (tug and barge) 

634′ 1″


Beam

68'


Depth 

40′


Midsummer draft 

27' 11 7/8″


Unloading boom length

250'


Unload rate 

5,000 nt/hr


Capacity 

24,300 gross tons


Cubic capacity

692,324 cubic feet


Operating speed

15.2 mph

Length

106′


Gross tons

190


Horsepower

3900

Length

106′


Gross tons

190


Horsepower

3900

Length

1000′


Beam

105′


Depth

56′


Midsummer draft (MS)

34′ 3/4″


Deadweight capacity at MS draft

80,900 gross tons


Deadweight capacity at 27′ 6″

62,100 gross tons


Unloading boom conveyor length

250′


Maximum unloading rate

10,000 tons/hour


Number of cargo holds

7


Number of hatches

37


Shaft horsepower

14,000


Year built

1977


Number of propellers

2

Length

1000′


Beam

105′


Depth

56′


Midsummer draft (MS)

34′ 3/4″


Deadweight capacity at MS draft

80,900 gross tons


Deadweight capacity at 27′ 6″

62,100 gross tons


Unloading boom conveyor length

250′


Maximum unloading rate

10,000 tons/hour


Number of cargo holds

7


Number of hatches

37


Shaft horsepower

14,000


Year built

1977


Number of propellers

2