Charts and Position Basics

• Explain chart symbols, depths, hazards, latitude and longitude, and simple position awareness.
• Apply chart symbols to a realistic onboard situation.
• Recall the core check: use the chart before departure, not only when lost.

A self-guided revision companion that explains essential concepts, then helps you practise and test them. It supports—but does not replace—recognised instruction, practical training, assessment or certification. Access is a one-time payment, not a subscription.