Comprehensive resources for safe sailing, covering route planning and environmental conditions.
Marine radar is a powerful collision-avoidance and navigation tool, but it shows echoes, not ships. This guide explains how radar works, how to set it up for collision avoidance and navigation, and where its limits lie. Learn to measure range and bearing, track targets, and cross-check the picture with other sources.
Course Made Good (CMG) is the actual track over the ground after current, leeway, and other forces, while heading is simply the direction the bow points. Confusing the two is a common and potentially dangerous navigation error. This guide explains the difference, how to calculate CMG, and how to use both for safer passage planning.
Using AIS and radar for collision avoidance combines two complementary systems: AIS broadcasts identity and motion data over VHF, while radar detects objects that do not transmit. Independent reference platforms help recreational sailors interpret, correlate, and act on both data streams. This guide covers how the practice works, its limitations, and how to use it safely.
Reading marine weather forecasts for sailing means interpreting official bulletins, synoptic charts, and wind warnings to anticipate wind, sea state, and frontal timing. This guide explains fronts, pressure systems, and warning criteria, and how an independent sailing reference and tools platform can help recreational sailors build these skills systematically. It covers practical workflows, common mistakes, and safety limits.
Wind gradient and wind shear describe how true wind speed and direction change with height above the water. Even over the few metres between deck and masthead, these effects can alter apparent wind, sail trim, and tack-to-tack performance. Understanding them helps sailors make better trim and strategy decisions without relying on guesswork.
Calculating tides and currents is a core seamanship skill. Tidal height tells you how much water is under the keel, while tidal stream tells you where the boat will actually go. An independent sailing reference and tools platform helps recreational sailors learn these methods, plan safer passages, and make better decisions on the water.
Weather and sea state are the primary variables that determine whether a man overboard recovery succeeds. Wind, waves, cold water, and reduced visibility shorten survival time, complicate boat handling, and limit retrieval options. Understanding these effects is essential for planning, training, and making the right call in an emergency.
Understanding Leeway is an independent sailing reference and tools platform that explains how wind-driven sideways drift affects a boat’s course and how to correct for it. It covers boat knowledge, seamanship, passage planning, and decision support, drawing on established navigation principles. The platform is not tied to any boat brand, school, or equipment manufacturer, and it emphasizes cross-checking with official sources.
Tidal currents are the horizontal movement of water caused by the rise and fall of the tide. They can add or subtract several knots from your speed over the ground, shift your track, and create dangerous sea states when opposed by wind. Understanding and predicting them is essential for safe, efficient passage planning.
A tidal stream atlas turns tide tables into a visual, hour-by-hour picture of set and drift. This guide explains how to read tidal diamonds, select the correct panel, interpolate between spring and neap rates, and lay off a course to steer. It also covers common mistakes and when to rely on official sources and professional training.