Understanding Bridge Lights

By World Wide Marine Training Did you ever wonder what the red and green lights on the underside of highway bridges mean? First of all, they mean nothing to the drivers on the road. Those lights are intended only for mariners. The U.S. Coast Guard regulates the placement of lights and clearance gauges on bridges […]... Read More

The Nautical Mile – Defined!

If the Neuse River is 18,714 feet across between Windmill Point in Oriental and Winthrop Point at Adams Creek, how many miles wide is it?   Well, it’s both 3.1 “nautical” miles and 3.6 “statute” miles.   A nautical mile is 6,076.1 feet and a statute mile is 5,280 feet.  A nautical mile is roughly 15% greater […]... Read More

Why You Need Chart Number 1

There are a wide variety of symbols, abbreviations and terms on nautical charts that describe the physical condition of each waterway.  There is much information on a nautical chart that can warn you about potential trouble and keep you where you want to be. Among the most important items in any body of water are […]... Read More

Understanding Tides

Did you ever wonder what causes the Tides? Many people refer to the tide as a “Lunar Tide.” Due to the “lunar” reference, most mariners assume that the tide is a result of lunar forces only. However, the term “Lunar Tide” refers only to the part of the tide that is produced by lunar forces. […]... Read More

The Compass Rose

Among the most basic of needs of any mariner on the water, is the need to know the heading to the next waypoint. With the advancements in electronic navigation, it has become much easier to travel from waypoint to waypoint. That is, as long as your electronics are operating properly. In a pinch, it always […]... Read More

The Origin of the “Mercator Projection”

In the year 1512, Gerardus Mercator was born. He would eventually have a great and lasting impact on navigation. Young Mercator grew up to become a geographer of worldwide fame. And why does the name “Mercator” have a familiar ring to most of us mariners? If you look in the title block of your navigation […]... Read More

Required Vessel Navigation Lights

The Navigation Rules specify lights that must be displayed on vessels underway from sunset to sunrise, and in daylight during times of restricted visibility.  There are “Inland” and “International” Nav Rules, which are similar for the most part, but do include a few differences.  The U.S. Government Printing Office publishes the Navigation Rules, which are […]... Read More