Compass Revision is an independent study platform. It is not affiliated with, approved by, or endorsed by Sail Canada, Transport Canada, ISED, CanBoat, the Canadian Hydrographic Service, or the Canadian Coast Guard. These companions do not award certification, a PCOC, or an ROC(M), and do not replace recognized instruction, practical experience, or assessment.

Compass Canada

Free · original fictional extracts

Practice Canadian chart symbols without copying an official chart

These twenty exercises use Compass-owned, deliberately fictional diagrams to teach CHS terminology, metric soundings, datum, hazards, lights, currents, notes, and electronic-chart checks.

Every extract is non-navigational. Use current official Canadian charts, Chart 1, corrections, and warnings afloat.

Question 1 of 20Soundings
4.2COMPASS FICTIONAL TRAINING EXTRACT — NOT FOR NAVIGATION

On a Canadian metric chart, what does a plain 4.2 sounding normally represent?