A GZ curve plots a sailboat’s righting lever against heel angle, revealing maximum righting moment, the angle of vanishing stability, and the energy required to capsize. Reading it correctly helps sailors assess a boat’s true stability limits and make safer decisions offshore.
Choosing the right anchor means matching the anchor design to the seabed you will encounter, the size and windage of your boat, and how long you need to stay put. No single anchor works perfectly everywhere, so most cruising boats carry at least two types. This guide explains the main anchor categories, how to evaluate holding power, and when to seek professional advice.
At night, a man overboard demands immediate, rehearsed action. Turn toward the side the person went over to swing the stern away, mark the position, and use a Williamson turn if the exact time of the fall is unknown. This article explains the procedures, equipment, and decision-making framework for recovering a person in the water after dark.
Anchoring in strong tidal streams and currents demands careful planning, correct scope, and constant awareness of changing forces. This independent reference guide explains how to assess holding ground, calculate swing room, and avoid dragging when the tide turns. It covers practical techniques for recreational sailors, from choosing the right gear to monitoring your position through a full tidal cycle.
A concise guide to marine fire extinguisher types, fire classes, USCG requirements, and the PASS procedure. Learn when to fight a fire and when to abandon ship, plus common mistakes and safety practices.
Choosing the right keel type is one of the most consequential decisions a sailor can make. It determines where you can safely sail, how the boat performs upwind, and how it behaves if you run aground. This guide explains the main keel designs, how to match them to your sailing grounds, and when to seek professional advice.
Single-line and slab reefing are the two most common ways to shorten a cruising mainsail. Single-line systems pull the tack and clew down with one control line, while traditional two-line slab reefing uses separate lines for each corner. The right choice depends on boat size, crew, and how much friction the system creates.
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.
Mast Tuning 101 is an independent sailing reference and tools platform that helps recreational sailors understand rig tuning, learn seamanship, plan safer passages, and make better decisions on the water. It organizes established principles from sailmakers, riggers, and marine publications into a structured, brand-neutral framework. The platform covers boat knowledge, step-by-step tuning procedures, passage planning, and decision-support checklists, while emphasizing that digital tools complement—not replace—professional training and physical inspection.
The boom vang is a small but powerful mainsail control that manages twist and boom height when the mainsheet is eased. This independent guide explains its purpose, how to adjust it for different points of sail, common mistakes, and safety considerations for recreational sailors.