District II Quebec City-Les Escoumins - Transports Canada

TRAINING OUTLINE
Skill 4 Deciding which measures to take for ice navigation Duration: 30 h
Module 4
Pilotage in ice
Component 3 At the conclusion of training, the candidate will be capable of Duration:
analysing the factors that influence navigation.
Training environment
In the classroom or independently, if a multimedia document on CD-ROM is available:
• using relevant documentation.
CONTENT
1. Sources of information:
– technical documentation;
– Vessel Traffic Services;
– weather data;
– ice charts.
2. Factors affecting navigation:
– ship’s manoeuvring ability;
– weather conditions;
– vessel traffic;
– nature and concentration of ice;
– stage of tide;
– strength and set of currents;
– depth under keel.
3. Use of radar:
– limits in radar performance;
– risk of erroneously interpreting
ice returns.
4. Preventive action in shallow waters.
5. Best time for negotiating shallow fairways.
6. Obstruction of sea suction filters.
SUGGESTED METHODS
For this component, candidates can work in the
classroom or on their own, if a multimedia
document on CD-ROM is available.
Candidates and instructor, as the case may be
• On the basis of technical documentation,
assess ship’s manoeuvring ability. On the
basis of data regarding ice conditions in the
marine district, assess effect of all factors
external to ship on its ability to safely
negotiate planned passage.
• On the basis of available technical
documentation, weather conditions, nature
of ice conditions, determine criteria
affecting radar performance in ice
conditions: range, detection, false readings,
false echoes, etc.
• On the basis of information obtained from
Vessel Traffic Services and other ships, ice
charts and local knowledge, take into
account conditions affecting navigation.
Analyse all factors and make decision based
on best guess.
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