Division of Spill Prevention and Response


Welcome to the Alaska Emergency Towing Systems Project

Golden Seas photo

UPDATE: An updated version of the Alaska ETS Manual is now available, please click HERE.

This webpage contains links to the Emergency Towing System (ETS) procedure manual, workgroup meetings exercise information and reports. It also serves as a resource for general public information regarding the ETS program.

An Emergency Towing System (ETS) is a pre-staged package of equipment that may be deployed in the event a disabled vessel requires assistance in accessing a place of refuge. A manual that instructs responders on the operations of system as well as procedures for deployment accompanies the system. The system is designed to use vessels of opportunity to assist disabled vessels that are in Alaskan waters. It consists of a lightweight high performance towline, a messenger line used in deploying the towline, a lighted buoy, and chafing gear. These components may be configured to deploy to a disabled ship from the stern of a tugboat or airdropped to the ship’s deck via helicopter.

Project Background

Within the last decade, several distressed or stricken vessel incidents occurred in or near Alaska. In a few cases these have caused environmental and economic repercussions. In each situation, the vessel was large tramper or cargo type vessels, which generally carry fuel in bottom tanks, thus posing a significant pollution risk in grounding.

The ETS program came into existence following the near grounding of the Salica Frigo on March 9, 2007 in Unalaska Bay. The Mayor of Unalaska convened a Disabled Vessel workgroup to address the possibility of future groundings and to discuss local emergency response solutions. This initial meeting prompted the Emergency Towing System (ETS) workgroup; whose goal was to develop emergency towing capabilities for disabled vessels in the Aleutian Subarea using locally available tugboats in conjunction with ETS equipment stationed in Unalaska.


The project continued over the past five years with a mobilization and deployment exercise conducted annually in Unalaska. In December of 2010 the ETS system was deployed from Unalaska in an emergency situation to assist the disable cargo vessel Golden Seas. This equipment, along with the availability of an appropriate sized towing vessel helped avert a possible grounding.


Since the programs origin, it has expanded statewide. The Alaska Department of Environmental Conservation has purchased and stored 10 inch Emergency Towing Systems at the USCG Air Station in Kodiak and Sitka, the Navy Supervisor of Salvage warehouse at Fort Richardson, and the Emergency Response warehouse in Adak, Alaska.


ETS Manual

The following link can be used to download the most current version of the ETS Procedures Manual (January 2014:V004).


Print Ready (12.3 MB PDF file)


Alaska Emergency Towing System (ETS) Training Video 2013


ETS Workgroup Information

Members of the ETS Workgroup include State, Federal and City government representatives, professional industry representatives (local and national) and oil spill prevention professionals.


ETS Exercises

The sixth annual ETS Deployment Exercise was held in Unalaska, Alaska on October 3, 2012 in conjunction with the Aleutian Islands Risk Assessment (AIRA) Phase B Advisory Panel meeting.  Further information on the AIRA Phase B project can be found at: http://www.aleutiansriskassessment.com.

Participants in the 2012 ETS Deployment Exercise included:

  • City of Unalaska
  • Alaska Department of Environmental Conservation
  • Alaska Marine Pilots Association
  • Alaska Maritime Agencies
  • Dunlap Towing
  • Harley Marine
  • KUCB – Unalaska Community Broadcasting
  • Nuka Research and Planning Group
  • USCG - MSD Unalaska, Sector Anchorage


An After Action Report, including the ETS Exercise Plan, with complete details on the exercise can be downloaded HERE.  Photos from the exercise can be found below.

Annual exercises will continue into the future and exercise schedules, agendas and plans will be posted on this site.

ETS Deployment Photo Gallery

October 3, 2012 – Unalaska, Alaska ETS Deployment Exercise

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July 20-22, 2011 – Juneau, Alaska ETS Deployment Exercise

Press Release: Agencies to Conduct Emergency Towing System Exercise in Juneau

Day 1

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Day 2

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July 31, 2007 – Aleutian Islands ETS Deployment Exercise

Aleutian Islands ETS Deployment Exercise -- July 2007
Helicopter sling load of the Emergency Towing System onto the Baltic Prosperity in Unalaska. Steve Moreno, Alaska Marine Pilot, providing a briefing on each of the ETS components.

Photos from the Aleutian Islands Emergency Towing System (ETS) Deployment Exercise, July 2007, Unalaska

(updated 8/2/2007) star


This page was updated: July 17, 2017 by ADEC

ACKNOWLEDGEMENT: This report website is funded in part with qualified outer continental shelf oil and gas revenues by the Coastal Impact Assistance Program, Fish and Wildlife Service, U.S. Department of the Interior.

DISCLAIMER: The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the U.S. Government. Mention of trade names or commercial products does not constitute their endorsement by the U.S. Government.