What you need to perform it
Primary qualification
- Spain: a merchant marine professional certificate with command attributions matching the tug's tonnage and trading area — typically Patrón de Litoral or Patrón de Altura (Royal Decree 973/2009), or Master/Mate qualifications for larger units (as a guide — verify the professional card's attributions in each case).
- International: an STCW command CoC according to tonnage and trade — Regulation II/3 for tugs < 500 GT on near-coastal voyages or Regulation II/2 where applicable, with flag endorsement (as a guide).
Basic STCW
- The master's STCW certificate package per flag: Basic Training (A-VI/1), survival craft (A-VI/2-1), advanced fire-fighting (A-VI/3) and medical first aid (A-VI/4-1).
- GMDSS operator certificate for the operating area (SRC/GOC depending on coverage — as a guide).
Specific courses
- ASD or Voith tug handling in the simulator and on board with an instructor — converting between propulsion types requires specific training.
- Escort towing and girting/girding risk management: limit angles, critical speed and use of the quick release.
- Towing deck equipment: winches, release hooks, high-modulus (HMPE) towlines and their retirement criteria (as a guide).
- Pilot-tug manoeuvring communications: the port's standardised VHF phraseology and pull/push orders.
Indicative experience
As a guide: 3-5 years serving on tugs (deckhand → mate/relief master) plus a period of manoeuvres supervised by a senior master before taking command — each company sets its own sign-off programme. Skill in one propulsion type is not presumed in another: ASD ↔ Voith conversion is retrained.
Observations
An external port service: not part of the assisted cruise ship's crew — it appears here because every port call depends on it. In Spain, harbour towage is a regulated port service under the TRLPEMM (Royal Legislative Decree 2/2011), provided under a Port Authority licence (as a guide). Typical route: tug deckhand → mate → Tug Master → towage company fleet master; manoeuvring experience is highly valued for access to Maritime Pilot (own card in this explorer). The trade's golden rule: line safety rules — better to slip a tow than capsize a tug.
What this role does
Every cruise ship berthing manoeuvre depends on tug precision: a mistake can damage the quay, the ship or people in the mooring area. The master handles a vessel of enormous concentrated power — azimuth (ASD) or Voith propulsion able to push and pull in any direction — in continuous VHF dialogue with the pilot. It is a craft of hands and applied physics: towing angles, hydrodynamic interaction with the assisted hull and the permanent risk of capsize through girting.
Typical watches
- Berthing and unberthing manoeuvres
Key responsibilities
- Push and tow large vessels during berthing with extreme precision.
- Respond to pilot instructions, coordinating tug power and position.
- Agree the assistance mode with the pilot (towing, pushing, escort) and the connection point according to the available bollard pull.
- Keep the towline, winch and quick-release hook/pin ready to let go in an emergency.
Operational scope
- Port, access channels, berthing zone
- Escort and channel-assistance manoeuvres for large vessels
Profile reviewed by HydroAbyss (2026). Cited rules and timeframes are indicative: the final requirement is set by the flag State, the Administration and each company.