The Great Lakes Towing Company
The Great Lakes Towing Company, founded in 1899 and headquartered in Cleveland, Ohio, is the largest U.S.-flag tugboat operator on the Great Lakes, running 40+ tugs across 14 ports and providing harbor assist, ship assist, ice breaking, vessel construction, repair, and machine shop services to commercial vessel owners and federal agencies.
- Company typePrivate
- Founded1899
- HeadquartersCleveland, United States
- Headcount101–250
- GTM typeB2B
- OfferingServices
What The Great Lakes Towing Company does
The Great Lakes Towing Company, incorporated in 1899 and headquartered in Cleveland, Ohio, is the largest U.S.-flag tugboat operator on the Great Lakes–Saint Lawrence Seaway System, running more than 40 tugboats across 14 ports from Duluth, MN to Buffalo, NY. The firm operates as the parent of a diversified marine services group whose subsidiaries include Great Lakes Shipyard (new vessel construction, repair, fabrication, and drydocking with a 900-ton Travelift), Great Lakes East, LLC (Caribbean breakbulk shipping via the warehouse barge Crimson Clover), Soo Linehandling (Soo Locks line-handling), The Wm. Plotz Machine & Forge Company (marine and industrial machine shop), Tugz International, Admiral Towing & Barge (government operations), and Wind Logistics (offshore wind). Customers span commercial vessel owners/operators under multi-year Full-Service Lakes-Wide contracts, federal agencies (USCG, USACE, USGS, U.S. Navy, EPA, NPS) via competitive procurement, and Caribbean cargo shippers.
Underlying technology centers on the firm's Damen-licensed shipbuilding capability, which produced the first tugs built to USCG Subchapter M regulations in the United States and integrates FlexaDrive hybrid power generation and propulsion systems developed with Logan Clutch Corporation. The firm also designs proprietary vessel classes (Z-Class ASD tugs, Handy-Size Class tugs) and operates the only U.S. shipyard enrolled in the Green Marine environmental certification program, with ABS and Lloyd's Register classification standing.
Revenue is generated through a mix of recurring multi-year harbor-assist and towing contracts, transaction-based cargo transportation and emergency assistance fees, one-time vessel sale/lease, and professional services for repair, fabrication, and machine shop work. The go-to-market is sales-led direct enterprise engagement with vessel owners, operators, charterers, and government agencies, supplemented by the OpenTug digital platform for Caribbean breakbulk bookings. Pricing is quote-based and not publicly disclosed, with FSLW contracts offering lower effective rates than pay-as-you-go service across the 40-port network.
The Great Lakes Towing Company firmographics
Firmographics- Name
- The Great Lakes Towing Company
- Legal name
- The Great Lakes Towing Company
- Website
- https://thegreatlakesgroup.com
- Company type
- Private
- Founded year
- 1899
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- The Great Lakes Towing Company, founded in 1899 and headquartered in Cleveland, Ohio, is the largest U.S.-flag tugboat operator on the Great Lakes, running 40+ tugs across 14 ports and providing harbor assist, ship assist, ice breaking, vessel construction, repair, and machine shop services to commercial vessel owners and federal agencies.
- Ownership category
- akta.pro rank
The Great Lakes Towing Company industry classification
Industry- Product category
- Marine Towing and Shipyard Services
- NAICS
- Deep Sea, Coastal, and Great Lakes Water Transportation (48311), Support Activities for Water Transportation (4883), Ship Building and Repairing (336611), Navigational Services to Shipping (488330), Ship and Boat Building (33661)
- SIC
- Water Transportation (4400), Ship & Boat Building & Repairing (3730), Construction, Mining & Materials Handling Machinery & Equip (3530)
- akta.pro primary industry
- Harbor Towage (Ship Assist & Berthing/Unberthing) (TLAHAHAA)
- akta.pro secondary industries
- Terminal & Shipyard Towage (Intra-Port/Facility Moves) (TLAHAHAI), Emergency Towage & Rescue (Refloating, Grounding Response) (IMAJANAB), Harbor & Terminal Tugs (ASD/Voith, Escort Tugs) (IMAJADAA), Heavy Lifting & Material Handling Infrastructure (Goliath Cranes, Jib Cranes, Hoists) (IMAJALAD), Heavy Lift & Marine Recovery (Cranes, Barges, Jack-up Support) (TLAHAIAF)
Keywords
Where The Great Lakes Towing Company is headquartered
LocationHeadquarters
- HQ city
- Cleveland
- HQ country
- United States
- HQ region
- North America
Offices12 records
Markets served
The Great Lakes Towing Company business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Infrastructure, Technology or R&D, Supply Chain
Revenue model
- Towing and Harbor Assist Services: Harbor assist, ship assist, and towing services across 40+ U.S. ports on the Great Lakes. Revenue generated through Full-Service Lakes-Wide (FSLW) contracts with vessel owners, operators, charterers, and agents. Services include ice breaking and ancillary services.
- Cargo Transportation and Logistics: Barge transportation and logistics services on the Great Lakes with transshipment opportunities to the Mississippi River system, Canada, and other seacoasts. Coordinates movements and facilitates shipper and receiver interests.
- Emergency Assistance Services: Emergency assistance to vessels wrecked, disabled, or in distress. Services provided under lakes-wide contract without salvage claims. Also provides OPA 90 SMFF services in partnership with Resolve Marine.
- Ship Construction: New vessel and barge construction services including tugs, supply boats, ferries, barges, dinner boats, research vessels, and yachts. Builds in steel and aluminum with custom design capabilities. Vessels available under purchase or lease options.
- Ship Repair and Maintenance: Repair and maintenance services ranging from routine dockside maintenance to complete ship repowering and reconstruction. Services for USCG, USACE, USGS, US Navy, and other government vessels.
- Custom Fabrication: Industrial welding and fabrication services certified by ABS for commercial and government projects including marine structures, cranes, platforms, gangways, and storage systems.
- Machine Shop Services (Plotz Machine): Marine and industrial machine shop services including remanufactured replacement parts, repair and overhaul on shafts, bearings, pumps, motors, valves, cooling towers, and ventilation systems.
- Caribbean Breakbulk Services (Great Lakes East): Breakbulk shipping between Port Canaveral, FL and San Juan, PR handling paper, lumber, steel, and rolling equipment. Jones Act compliant warehouse barge Crimson Clover operations.
- Charter, Sale & Purchase: Management of shipping operations from vessel and barge acquisition to crewing and voyage planning. Equipment available for sale or bareboat, time, or voyage charter.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Multi-year contract | Full-Service Lakes-Wide (FSLW) Harbor Assist & Towing Contract |
| Transaction based/ take rate | Pay-as-you-go | Non-Contract Rates |
Go-to-market motion3 records
Distribution channels6 records
Marketing channels7 records
The Great Lakes Towing Company product offering
Product offeringCore offering
The Great Lakes Towing Company operates the largest U.S.-flag tugboat fleet on the Great Lakes, providing harbor assist, ship assist, cargo transportation, ice breaking, and emergency assistance services across 40+ U.S. ports. Through its Great Lakes Shipyard division, the company also performs new vessel and barge construction, repair, drydocking, custom fabrication, and machine shop services for commercial and government customers. Sub-brands include Soo Linehandling (lock transit linehandling), Great Lakes East (Caribbean breakbulk shipping), and Plotz Machine (marine/industrial machine shop).
Product overview
The Great Lakes Towing Company operates as a full-service marine transportation organization providing towing, shipyard, and logistics services through multiple divisions. The core offerings include The Great Lakes Towing Company (harbor assist, cargo transportation, ice breaking, and emergency services with 35+ tugboats across 40+ ports), Great Lakes Shipyard (new vessel construction, repair, drydocking, and custom fabrication with a 900-ton Travelift), and Plotz Machine (marine and industrial machine shop services acquired in 2021). Supporting operations include Soo Linehandling (line handling at Soo Locks), Great Lakes East LLC (Caribbean breakbulk shipping with the Crimson Clover barge), and subsidiaries Tugz International LLC, Admiral Towing & Barge Company, and Wind Logistics Inc. for offshore wind services. The company also offers specialized Subchapter M compliance services for towing vessel regulations.
Differentiator
Problem solved
Functional benefit
Products and services
- The Great Lakes Towing Company (Towing Services) Marine towing services including ship assist, harbor towing, cargo transportation, ice breaking, and emergency assistance operated across 40+ U.S. ports on the Great Lakes using a fleet of 40+ tugboats.
- Great Lakes Shipyard (New Vessel Construction, Repair, Fabrication, Maintenance) Full-service shipyard providing new vessel and barge construction, fabrication, maintenance, and repairs, featuring a 900-ton mobile Travelift and state-of-the-art facilities on the Cuyahoga River in Cleveland, Ohio.
- Soo Linehandling Services Line handling assistance services for vessels transiting the Soo Locks in Sault Ste. Marie, Michigan, providing trained and equipped linehandlers for safe lock transit.
- Great Lakes East, LLC (Caribbean Breakbulk Shipping) Caribbean breakbulk shipping services operating the Jones Act-compliant warehouse barge Crimson Clover between Port Canaveral, FL and San Juan, PR for paper, lumber, steel, and rolling equipment cargo.
- Plotz Machine (The Wm. Plotz Machine & Forge Company) Marine and industrial machine shop services including remanufactured replacement parts, repair and overhaul on shafts, bearings, pumps, motors, valves, and precision machined products for marine and industrial customers.
- New Vessel and Barge Construction New vessel and barge construction services including tugboats, workboats, supply boats, ferries, barges, dinner boats, research vessels, and yachts, built in steel and aluminum with custom design capabilities under purchase or lease options.
- Repair and Drydocking Services Vessel repair, drydocking, and maintenance services ranging from routine dockside maintenance to complete ship repowering and reconstruction, including classification society inspections for USCG, USACE, USGS, Navy, and other government vessels.
- Custom Fabrication Services Industrial welding and fabrication services certified by ABS for steel, stainless, and aluminum materials including boathouse pontoons, breakwaters, marine structures, cranes, platforms, gangways, and custom storage systems.
- Charter, Sale, and Purchase Services Maritime services for vessel and barge acquisition, crewing, and voyage planning. Equipment available for sale or under bareboat, time, or voyage charter arrangements.
Quantifiable outcome
- 126 years of continuous business operations
- +2 more outcomes
Companies that use The Great Lakes Towing Company
Customer profileNamed customers10 records
Segments4 records
Ideal customer profiles3 records
The Great Lakes Towing Company technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
The Great Lakes Towing Company partnerships and signals
Strategic signalPartnerships
14 partnerships are on record, tiered major, core and minor.
- Sarter Marine TowingmajorJoined forces for expanded ice breaking and towing services, particularly in the Sturgeon Bay area.
- Resolve MarinecoreExclusive agreement for OPA 90 Salvage and Marine Firefighting (SMFF) services in U.S. Coast Guard District 9 on the Great Lakes. Partnership provides comprehensive emergency response including firefighting equipment, dewatering pumps, and other response equipment.
- Damen Shipyards GroupcoreFive-year partnership authorizing Great Lakes Shipyard as an official builder of Damen vessel designs including Stan Tugs, work barges, offshore vessels, and other marine products. Damen provides technical services including onsite management, supervision, drawings, specifications, and design information.
- American Bureau of Shipping (ABS)coreClassification society partnership for vessel and shipyard standards. ABS satellite office maintained on-site with surveyors from local ABS division. All shipyard work conducted in accordance with ABS criteria.
- Lloyd's RegistercoreClassification society partnership. Visiting Lloyd's Register Group utilized along with ABS and Lloyd's Rules as primary quality assurance benchmarks.
- United States Coast GuardcoreCollaboration on towing vessel inspection including participation in Towing Vessel Bridging Program and Voluntary Inspections. Shipyard sets USCG federal regulation as primary benchmarks for repair and new construction projects.
- Green MarinecoreVoluntary environmental certification program for North America's maritime industry. Company joined with fleet of more than 35 tugs and shipyard - making it the first U.S. shipyard to join the program.
- Logan Clutch CorporationmajorPartnership for FlexaDrive hybrid power generation and propulsion systems for the new Damen-designed fleet of tugs. Agreement signed at ITS 2018 Marseille.
- Jensen Maritime ConsultantsmajorPartnership for Jensen Series vessel designs. Jensen provides naval architecture and marine engineering for vessel design and development.
- Masters, Mates, and Pilots (MMP)coreLargest employer of Tugmen on the Great Lakes. Licensed Captains and Engineers affiliated with International Organization of Masters, Mates & Pilots, Great Lakes and Rivers Maritime Region, AFL-CIO.
- Seafarer's International Union (SIU)coreDeckhands and Acting Engineers affiliated with Seafarers International Union of North America, Atlantic, Gulf, Lakes, and Inland Waters District/NMU, AFL-CIO.
- Highway H20minorGateway organization offering shippers direct access to commercial, industrial, and agricultural heartland of North America through Great Lakes-St. Lawrence Seaway system.
- GT USA Canaveral Cargo Terminal (CCT)majorPartnership for Caribbean operations at GT USA's Canaveral Cargo Terminal providing improved cargo scanning, expanded storage, enhanced vessel turnaround, and guaranteed same-day truck unloading.
- Crimson Shipping CompanymajorAcquired warehouse barge Crimson Clover from Crimson Shipping Company for Caribbean breakbulk operations.
Scale indicators12 records
Recent moves7 records
Expansion highlights5 records
The Great Lakes Towing Company competitors and assessment
Company assessmentDirect peers
- McKeil Marine: Canadian-based marine services provider offering harbor towing, ship assist, cargo transportation, and tug/barge operations on the Great Lakes. Direct competitor in overlapping Great Lakes ports and one of the few operators of comparable scale on the Canadian side of the lakes.
- Resolve Marine: Marine salvage, emergency response, and OPA 90 SMFF services provider; in 2022 partnership with Great Lakes Towing for exclusive emergency response in Coast Guard District 9 on the Great Lakes. Overlaps in emergency response, marine salvage, and towage.
- Sarter Marine Towing: Great Lakes tugboat operator focused on harbor assist and ice breaking, particularly in the Sturgeon Bay area. Joined forces with The Great Lakes Towing Company in 2022 for expanded ice-breaking services, indicating direct overlap in core service offerings and customer base.
Broad incumbents
- Vane Brothers: Major U.S. harbor towing and barge transportation company operating primarily along the East Coast and Chesapeake Bay. Comparable in tug fleet operations and shipbuilding/ship repair capabilities, though with different geographic focus.
- Moran Towing Corporation: One of the oldest and largest U.S. harbor towing companies, operating a fleet of tugs on the East Coast, Gulf of Mexico, and Great Lakes. Provides ship assist, harbor towing, and barge transportation services comparable to Great Lakes Towing's core offerings.
- Bouchard Transportation: U.S. harbor and coastal tug/barge operator with one of the largest independent fleets in the country. Competes with The Great Lakes Towing Company in tug/barge services and overlaps in ship assist and cargo transportation, though primarily focused on coasts rather than Great Lakes.
Others
- Damen Shipyards Group: Global shipbuilder and the licensor whose designs Great Lakes Shipyard builds under a five-year partnership. While a partner rather than competitor, comparable in tug and workboat construction capabilities and a potential competitor if Damen expands U.S. licensing.
Regional players
- Great Lakes Shipbuilding / Nearby Regional Shipyards (e.g., Bay Shipbuilding, Fincantieri Marine Repair): Regional shipyards serving Great Lakes and St. Lawrence Seaway vessel operators. Comparable in vessel construction, repair, drydocking, and shipyard services — directly competing for newbuild and repair contracts in the same customer base.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks7 records
Key highlights7 records
Customer concentration
The Great Lakes Towing Company social profiles
Digital presenceThe Great Lakes Towing Company compliance and trust
Trust signalCompliance6 records
The Great Lakes Towing Company financial estimates
Financial estimateRevenue estimate
Valuation estimate
The Great Lakes Towing Company leadership team
Management profileNumber of profiles
Profiles9 records
The Great Lakes Towing Company subsidiaries and ownership
Company hierarchySubsidiaries7 records
The Great Lakes Towing Company funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
The Great Lakes Towing Company M&A and investment
M&A and investmentM&A1 record
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about The Great Lakes Towing Company
What does The Great Lakes Towing Company do?
The Great Lakes Towing Company operates the largest U.S.-flag tugboat fleet on the Great Lakes, providing harbor assist, ship assist, cargo transportation, ice breaking, and emergency assistance services across 40+ U.S. ports. Through its Great Lakes Shipyard division, the company also performs new vessel and barge construction, repair, drydocking, custom fabrication, and machine shop services for commercial and government customers. Sub-brands include Soo Linehandling (lock transit linehandling), Great Lakes East (Caribbean breakbulk shipping), and Plotz Machine (marine/industrial machine shop).
Is The Great Lakes Towing Company a public or private company?
The Great Lakes Towing Company is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was The Great Lakes Towing Company founded?
The Great Lakes Towing Company was founded in 1899. It employs 101 to 250 people.
Where is The Great Lakes Towing Company based?
The Great Lakes Towing Company is headquartered in Cleveland, United States, in the North America region.
How does The Great Lakes Towing Company make money?
Nine revenue lines are on record. Towing and Harbor Assist Services are the primary driver. The others are cargo Transportation and Logistics, emergency Assistance Services, ship Construction, ship Repair and Maintenance, custom Fabrication, machine Shop Services (Plotz Machine), caribbean Breakbulk Services (Great Lakes East) and charter, Sale & Purchase.
Who are The Great Lakes Towing Company's main competitors?
Direct peers on record are McKeil Marine, Resolve Marine and Sarter Marine Towing. Broad incumbents are Vane Brothers, Moran Towing Corporation and Bouchard Transportation. Damen Shipyards Group is listed as an others. Great Lakes Shipbuilding / Nearby Regional Shipyards (e.g., Bay Shipbuilding, Fincantieri Marine Repair) is listed as a regional player.
Does The Great Lakes Towing Company have an API?
No public API is recorded for The Great Lakes Towing Company.
What industry is The Great Lakes Towing Company in?
The Great Lakes Towing Company's product category is Marine Towing and Shipyard Services. Its primary akta.pro industry code is TLAHAHAA, Harbor Towage (Ship Assist & Berthing/Unberthing), with a secondary code of TLAHAHAI, Terminal & Shipyard Towage (Intra-Port/Facility Moves). Its NAICS code is 48311 and its SIC code is 4400.