Inshore waters and strong wind forecast for coastal waters up to 12 miles offshore. Forecasts for UK inshore waters are issued four times a day and cover a period of 24 hours from 0000, 0600, 1200 and...More Details

A fictional inshore waters forecast for the sea area Dunbarton to Farlow, part of the RYA Northern Hemisphere training area. This forecast is used in the Weather module's Impact & monitoring weather session,...More Details

Fictional inshore waters forecast for the sea area Dunbarton to Farlow (an RYA training area in the Northern Hemisphere). This forecast is used in the Should we do this? session in the Passage...More Details

A step-by-step guide showing how to plot Dead Reckoning. This chart plotting technique is taught in the Plotting Positions module of the Day Skipper Theory course. ...More Details

A step-by-step guide showing how to plot an Estimated Position. This chart plotting technique is taught in the Plotting Positions module of the Day Skipper Theory course. ...More Details

This step-by-step guide shows how to plot a preemptive Course to Steer. The Day Skipper Theory course's Passage Planning & Making module teaches this chart plotting process. ...More Details

Worksheet to help calculate the height-of-tide required to clear a charted drying height. This supports the Solving Depth Conundrums topic in the How much water? Module of the Day Skipper theory course. ...More Details

Worksheet to help calculate the height of tide required to clear a charted depth. This supports the Solving Depth Conundrums topic in the How much water? Module of the Day Skipper theory course. ...More Details

Stay Safe and Be Heard at Sea This guide to GMDSS VHF DSC Procedures for Small Boat Users is designed to help you understand how to use your marine VHF radio correctly, confidently, and in...More Details

Engine checks are an important part of a pre-departure preparation procedure. The WOBBLE mnemonic provides a simple way to run through the checking procedure and reduce engine problems at sea. ...More Details

Table of HDOP ranges and their associated meanings. When establishing the accuracy of our GNSS (GPS) fix, we need to understand the Dilution of Precision (DOP), sometimes referred to as Horizontal Dilution...More Details

Worksheet to help calculate the depth we need now to retain enough clearance at low water. This supports the Solving Depth Conundrums topic in the How much water? module of the Day Skipper Theory course. ...More Details