Boating Knowledge Base

Have a sailing question? Access NauticEd’s sailing and boating knowledge base, and gain in-depth answers to your sailing questions. If you’re interested in powerboating, visit our new powerboating blog.

When Turbulent Flow Happens in Sailing

An airplane stalls and falls out of the sky when the wings stop producing as much lift, similar to when turbulent air flow happens in sailing...
August 22, 2023/by Grant Headifen
Steel fluke anchor for secure boat mooring; ideal for sandy or muddy seabeds. Durable marine hardware.

Types of Anchors

Anchor design has been the focus of much research over thousands of years, and as a result, there are
October 20, 2023/by Grant Headifen
Sailing yacht anchored near rocky cliffs, flag flying high, with calm ocean waters and serene coastal scenery.

Using Multiple Anchors

There are occasions when more than one anchor will add safety and comfort. One possibility is to use one or two anchors...
October 16, 2023/by Grant Headifen
Schematic of boat bilge pump system with battery, manual and float switches, showing hull and water levels.

Bilge Pumps on a Charter Boat

Boats have two types of pumps to empty bilge water; electronic and manually operated. 
April 5, 2024/by Grant Headifen
Diagram showing Earth's latitude lines from the Equator to 90°N, illustrating the planet's spherical shape and rotation axis.

Latitude and Longitude

The latitude and longitude coordinate system is the key navigational concept for sailing. It is the mariner’s coordinate system.
October 12, 2023/by Grant Headifen
Red and blue waterproof sailing jackets, perfect for marine adventures and protection against harsh weather.

Clothing for Sailing

Dressing appropriately for weather conditions is an important but often overlooked topic. Weather in the marina may be considerably different from weather beyond the marina and conditions can drastically change during your venture.
October 17, 2023/by Grant Headifen
Large cargo ship in open water with humorous text on the bow reading, If you can read this, say goodbye to your mommy.

Action to Avoid Collision

When you reach the section on who is responsible to give way to whom - in certain circumstances...
August 23, 2023/by Grant Headifen
Red and white diver down flag indicating scuba diving activity or a submerged diver in the area.

Non-Electronic Communications

Sailing has been around for thousands of years. Electronic Communications has been around for less than 100 years (not counting the telegraph).
October 24, 2023/by Grant Headifen
Diagram illustrating sea breeze effect: warm air from land replaces cooler water air, influencing sailboat movement.

Wind

Winds can be gentle, hardly felt, like zephyrs flitting about in a local area, or they can be vast movements of air moving swiftly across oceans and continents at low and high altitudes.
October 22, 2023/by Grant Headifen

Sail TellTales

"Telltales" attached to the sail in strategic positions to "tell" us what the wind is doing at that exact location.
August 11, 2023/by Grant Headifen
Sailboats passing port to port with horn signals, showing nautical right-of-way on open water.

Head-on Nav Rules Situation

The Rule (a) Unless otherwise agreed when two power-driven vessels are meeting on reciprocal or nearly reciprocal...
August 26, 2023/by Grant Headifen
Two people enjoying a sunny day sailing, adjusting sails on a boat with clear blue skies in the background.

Sails – Getting Familiar with a Charter Boat

We’re pretty certain here that you know how to operate sails on a sailboat,  however – chances are that you’re chartering a boat much bigger than you’re normally used to.
April 3, 2024/by Grant Headifen
Sailboat with people navigating open waters, capturing the essence of adventure and freedom under clear skies.

Seacocks – Getting Familiar with a Charter Boat

Seacocks are designed to let water flow out of the hull safely. They are not one-way valves so any loose clamps around the seacock itself create leaks around the hoses and can allow water to enter into the boat. This is usually bad – right?
April 4, 2024/by Grant Headifen
Sailboat anchor issue: rope lifts shank, flukes can’t dig in, affected by wind direction.

Anchoring Rode and Scope

To hold a sailboat, the anchor must naturally be attached to the vessel. This is accomplished by using “rode,” which is either all chain or a combination of rope (nylon line) and chain. Learn from this interactive animation.
July 20, 2026/by Grant Headifen
Diagram of aerodynamic forces on an airfoil and sail, showing lift, drag, and pressure differences for sailing dynamics.

Sailing and Wind Forces

A sailboat moves in upwind and downwind directions. Downwind is intuitive; it just gets blown downwind. But just how does a sailboat move into the wind?
October 24, 2023/by Grant Headifen
Sailboats racing in the ocean with crews managing sails, showcasing competitive sailing dynamics and teamwork.

Sails

Sails are sophisticated objects. It is not only the materials they are made from that are important, but also, the way they are cut and sewn.
October 13, 2023/by Grant Headifen
Sailing catamaran with solar panels and green sail navigating along a scenic, forested coastline under clear blue skies.

Sailboat Solar Power

Solar panels produce DC power and are used to charge the batteries. A relatively small solar panel such as 1 square foot (0.1 m2) can produce about 1½ amps at...
October 24, 2023/by Grant Headifen
Torqeedo Power 48-5000 lithium battery for electric sailboats, dimensions: 23x10x8.6 (577.5x253x218 mm).

Available Energy Stored in a Battery

You don’t actually run all of the electron charge out of a battery when it is considered empty.
April 13, 2024/by Grant Headifen
Sailboat bathroom interior with compact sink, mirror, and toilet, showcasing efficient design for marine use.

Heads on a Charter Boat

You don’t need trouble with the waste system, especially when on vacation.
April 4, 2024/by Grant Headifen

Boat Heading vs Sail Set and Forces on the Sail

The set of your sail depends on your sailing angle to the wind. You're working to maximize the aerodynamic forces on the sail.
August 30, 2023/by Grant Headifen
Diagram showing 12V DC power inverted to 110V AC current with a waveform illustration and labeled inverter.

Sailboat Inverters

Sailboat Inverters are devices used to convert 12-volt DC battery electricity to AC 110-volt or 220-volt electricity. Special electronics in
October 13, 2023/by Grant Headifen

Propeller Entanglement

If there is a sudden slowing or stopping of the engine while motoring it is possible that you have picked up some floating line, hopefully not from your vessel.
October 17, 2023/by Grant Headifen
Sailboat with underwater propeller motion illustration beneath a clear sky.

Dual Rudder Monohulls

When a monohull sailboat has dual rudders, the boat will act with different characteristics than with a single rudder. Thus, the point of this module is to help you maneuver a dual-rudder monohull sailboat.
May 13, 2024/by Grant Headifen

Hull and Keel

A sailboat’s hull and keel receive considerable attention from a sailboat designer since they determine the capacity of the vessel, how fast it will go, and the degree of safety and comfort.
October 16, 2023/by Grant Headifen

Last updated on December 6th, 2024