Build tugboats for harbour, escort and related duties.

Design vessels and define their technical requirements.

Supply propulsion and control equipment for tugboats.

Use tugboats and crews to assist vessel movements.

Maintain and repair tugboats after delivery.

Design tugs and workboats.

Operate tugs and provide pilotage.

Builds tugboats and offers support after delivery.

Builds tugboats with several propulsion options.

Robert Allan Ltd. provides naval architecture, marine engineering and consulting services. Its designs include tugs for harbour work, escort towing and other duties.

Supplies tug propulsion units, controls and service.

Svitzer provides towage and related services for ships calling at ports and terminals. Its official description distinguishes the vessels and terminal work it supports.

Boluda Towage Europe provides port towage and describes work in ports including Rotterdam, Zeebrugge, Hamburg and Liverpool. Its page also describes a Rotterdam service that transfers stores, parts and people between port and anchorage.

KOTUG provides harbour, terminal and offshore towage, alongside chartering, training and consultancy. Check the local operation for the services available at a particular port.

Crowley provides marine transport, towing and related logistics services. Its company description covers several businesses and a mix of vessels it owns, operates or manages.

Foss Maritime provides harbour services, towing and marine transport within Saltchuk Marine. Its Seattle shipyard closed permanently on October 30, 2021; that closure did not end its other businesses.

Seaspan ULC operates tug and barge services on Canada’s West Coast. Its May 2026 accessibility plan identifies related shipyard companies that provide repair and refit work.

Moran Towing describes ship assistance, marine towing and work for bulk cargo and LNG terminals. Its site supports a towage-service role and links readers to its operations.

SAAM Towage provides harbour and terminal towage, escort work, offshore support and other marine services. Its public service descriptions support the operator role.

PSA Marine provides pilotage and towage and lists marine advisory, training and other services. Its official page identifies local businesses in several countries.

Ocean Group provides harbour towing, marine transport, salvage and vessel repair. Its official site names these services separately from shipbuilding and describes work in Canada and the Caribbean.

Boskalis provides towage through Smit Lamnalco, as described in its August 2026 results. Smit Lamnalco sold its Australian and Papua New Guinean operations on September 30, 2025; those operations are outside the group’s current coverage.

Glosten provides naval architecture and marine engineering, including tug design. Its official site describes work from design through construction support and identifies an oceangoing tug design and current tug projects.

BMT provides independent vessel design and marine engineering. Its official design brochure includes articulated tugboats and explains that it can work for an operator or as a subcontractor to a shipyard.

Builders produce tugboats for owners.

Naval architects produce vessel designs.

Propulsion firms supply tug thrusters and controls.

Towage operators assist vessel movements.

Builders offer tugs using battery-electric propulsion.

Tug designs use steerable propulsion.

Towage operations consume marine fuels.

Class rules constrain vessel design and construction within the chosen class.

Builder enquiries connect tug vessels with potential owners.

Local contacts route vessel assistance requests.

Thrusters and control equipment supplied to tug builders.

Vessel movement assistance delivered by tug operators.

Vessels built for ship handling and towing duties.

Naval architecture used to build vessels.

Steerable propulsion units used for tug manoeuvring.

Battery power used to propel tugboats.

Fuels used in tug operations, including options described by operators.

Rules applied within the chosen vessel class and assessment scope.

Builders take vessel enquiries and discuss specifications.

Operators publish local commercial and operating contacts.

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