Glossary Archive

Flag semaphore indicating the letter W.

International Morse Code sequence representing the letter W.

An intergovernmental organization with a membership of 191 Member States and Territories that works to facilitate international cooperation in the field of meteorology, climatology, hydrology, and geophysical sciences.  The World Meteorological Organization (WMO) is a specialised agency of the United Nations responsible for promoting international cooperation in the field of meteorology, climatology, hydrology, and related...

The Working end of a rope refers to the part of the rope that is actively being used for a specific task, such as tying a knot, securing a line to a cleat, or hoisting a sail. The working end is the portion of the rope that is manipulated, pulled, or adjusted during the operation,...

A standard in satellite-derived positions. Charts will indicate if they are calibrated to WGS84 or another system. WGS84 is the standard adopted by most cartographers for GNSS (GPS) positions. Established and maintained by the United States National Geospatial-Intelligence Agency since 1984. The NGIA revised it in 2014, however, it retains the reference WGS84. Its pre-cursers were...

An intergovernmental organization with a membership of 191 Member States and Territories that works to facilitate international cooperation in the field of meteorology, climatology, hydrology, and geophysical sciences.  The World Meteorological Organization (WMO) is a specialised agency of the United Nations responsible for promoting international cooperation in the field of meteorology, climatology, hydrology, and related...

World Sailing, formerly known as the International Sailing Federation (ISAF), is the governing body for the sport of sailing worldwide. Headquartered in London, World Sailing plays a pivotal role in promoting and regulating sailing on a global scale. Sailing, a sport that combines the thrill of competition with the beauty of nature, has a rich...

A specific location or reference point on a navigational route, often used to mark progress or changes in course. A waypoint is a predetermined geographical location that is used in navigation to help guide a vessel along a planned route. These points are typically defined by coordinates, such as latitude and longitude, and are entered...

The International Maritime Signal Flag Xray. Meaning Stop carrying out your intentions and watch for my signals.

Flag semaphore indicating the letter X.