2011: The company was established and awarded by Puerto Nuevo SA, local branch of Glencore, the operation of 4 tugboats, 2 pilot boats, mooring and pilot services for a period of 10 years. The newbuilding program started in SIMA Perú.

October 2013: RM Magdalena and RM Sierra Nevada, the first tugs of the fleet arrived to Cartagena.

Local permits were granted:

• Licencia de Explotación Comercial – October 2012 (DIMAR).
• Registro de Operador Portuario – December 2012 (MINTRANSPORTE).
• Provisional tug registry RM Magdalena y Sierra Nevada November 2013 (DIMAR).

December 2013: First maneuver in Santa Marta, Colombia; MN MIEDWIE and first maneuver in Puerto Nuevo, MN LADY BEGUM.

April 2014: Initiated contract with Glencore at Puerto Nuevo SA facilities.

October 2014: First special operation of international towage of the crane barge MESTRE JANOTA from Barranquilla to Cabo Rojo, Dominican Republic.

September 2014: Started operations in Cartagena and Buenaventura by adding 1 owned tug (built 2000, 63 BP) and 3 long-term timer charters (GPC, built 2012, ASD tugs, 70 BP) operating 8 tugs in total covering 3 major Colombian ports.

January 2015: Coltugs obtained its first ISO9001; ISO14001 and OSHAS18001 certifications.

April 2015: Started operations in Barranquilla by adding 1 additional tug to the fleet (built 1999, 65 BP), reaching a total of 9 tugs. This was an important milestone as Coltugs was the first company to position an ASD tug at this port.

April 2016: Joint venture with Coremar Group under the name Coremar Coltugs Towage operating a fleet of 14 tugs and 1 crew boat covering all major Colombian ports.

2019: Newbuilt tug “Caño Cristales” arrived from Turkey. The most powerful and modern tug in Colombia.

2021: First female CEO, Silvia Herrera, took over the wheel.


Meet the Management Team and the Advisory Board.

Cargoes & Services

Read more about our cargoes & services.

LGP & Petchem Gases

Navigator Gas operates a fleet of ethylene and semi-refrigerated gas carriers, with sizes ranging from 3,500 cbm to 35,000 cbm capacity.

Dry bulk

Through its subsidiaries Ultrabulk and Horizon, Ultranav serves a wide range of dry bulk segments. The fleet transports numerous types of dry cargo.

Coastal trades

Ultranav has many years of extensive knowledge operating in the coastal areas of South America. We cover a variety of trading platforms in different segments.

Towage & offshore

Ultranav is active in both towage and offshore segments through the subsidiaries Ultratug and Wilson Sons Ultratug Offshore.

Ultra Ventures

Ultra Ventures invest in maritime related start up companies, with the focus on new technologies.


UltraSafe is a programme designed to anchor safety within our culture. Its aim is to create a safety culture which everyone trusts; resilient and strong.

Fuel efficiency

Ultranav continuously investigates and invests in different devices and technologies to optimise our vessels and practices towards more sustainable solutions.


Ultranav operates a diversified fleet including owned tonnage, chartered tonnage and joint venture/co-owned vessels in different segments, offering a full variety of shipping services.