Service standards for ice operations
Find out about our ice operations centres (IOC), service delivery targets and priorities.
On this page
- Ice operations centres
- Service delivery targets
- How service requests are handled
- Understanding response times
- Priorities
Ice operations centres
Canadian Coast Guard ice operations centres run each ice season for 24 hours a day, and are staffed with officers experienced in icebreaking operations. The centres keep contact with icebreakers at all times and maintain contact with shipping via Marine Communications and Traffic Service centres.
Service delivery targets
Our targets for service delivery include:
- availability
- readiness
- response times
Availability
Icebreakers are available in specific locations at different times of year according to the Canadian Coast Guard 2024 Levels of Service. Summer icebreaking services are carried out from June to November in northern communities above the 60° North parallel, including Hudson Bay in the Canadian Arctic.
Winter icebreaking services are carried out from November to May in:
- Ontario
- Quebec
- Nova Scotia
- New Brunswick
- Prince Edward Island
- Newfoundland and Labrador
Readiness
During the ice season, icebreakers are maintained in a state of readiness, usually allowing them to get underway within an hour to respond to a service request.
Target response times
Under normal conditions, icebreaker target response times to provide icebreaking services are:
- Labrador Coast – 12 hours
- NE and East Coasts of Newfoundland – 12 hours
- West Coast of Newfoundland – 12 hours
- Nova Scotia and Bay of Fundy – 12 hours
- Gulf of St. Lawrence – 12 hours
- St. Lawrence and Saguenay Rivers – 6 hours
- Lakes Huron, Erie, Superior (when the locks are open), Ontario (when the locks are open) – 8 hours
- Arctic Waters – 10 hours (under review)
How service requests are handled
Canadian Coast Guard accepts icebreaking service requests in advance of when the service is needed. Once a request is received, we assess conditions and determine the most suitable available resource to assign to the task.
Note: The time spent reviewing and assigning the task is not included in level of service calculations.
Understanding response times
Each icebreaking region has a targeted response time, based on regional conditions and service standards.
The LOS is calculated by:
- Subtracting the time the service is required from the time the icebreaker arrives on scene.
Possible conditions that may affect CCG response times
We make every effort to respond promptly to icebreaking service requests. However, response times may vary depending on several operational and environmental factors, including:
- vessel location
- the distance and accessibility of the vessel requesting assistance
- timing of request
- if the service is not required at the time of the request, icebreaking assets will not wait beyond a reasonable amount of time before departing to address other pending priorities
- emergency status
- requests involving vessels in immediate danger will be prioritized
- ice and weather conditions
- severe ice or weather may delay or restrict icebreaker operations
- resource availability
- availability of suitable icebreaking vessels at the time of the request
- icebreaker capability
- the ability of the assigned icebreaker to safely and effectively assist the vessel based on:
- ice class
- power
- maneuverability
- the ability of the assigned icebreaker to safely and effectively assist the vessel based on:
- geographic or hydrographic limitations
- shallow waters, narrow channels, and other navigation hazards may limit access
- safety restrictions
- CCG may delay or decline a response, if conditions pose an undue risk to:
- crew
- ships
- equipment
- environment
- CCG may delay or decline a response, if conditions pose an undue risk to:
- crew and fuel changes
- required crew rotations or refueling may temporarily affect vessel readiness
Priorities
We prioritize icebreaking service requests accordingly:
- All distress and emergency situations take precedence
- Service requests from ferry services provided in accordance with the Terms of Confederation/Union will be given priority
- Other ferry services will receive priority as deemed appropriate by the Canadian Coast Guard
- Ships with vulnerable cargoes (pollutants, dangerous goods and perishables) and vessels transporting cargo which is vital to the survival of communities
- Marine traffic, fishing vessels and commercial ports
For more information about when and where our icebreaking fleet are active, refer to the 2023-2028 Client Icebreaking Requirements.
Key prioritization factors
Icebreaking priorities differ between the Winter and Summer seasons, as outlined in the Canadian Coast Guard’s Levels of Service. Several factors and scenarios may influence the prioritization of requests.
Vessels underway versus secured in port
Vessels actively underway will be given higher priority than those secured alongside or at anchor.
Compliance with CCG advice
Vessels that do not follow CCG routing recommendations or operational advice may receive lower priority for subsequent requests.
Community or leadership requests
Icebreaking services may be delayed or withheld if a trusted source, such as a mayor, Indigenous community leader, or relevant local authority, formally requests a pause or cancellation.
Note: In the event of an emergency, public safety takes precedence, and such requests may be overruled.
Authorization to break fast ice
In areas where fast ice (ice attached to the shore) must be broken, formal authorization is required from community or Indigenous leadership before services are provided.