Showing posts with label NOAA charts. Show all posts
Showing posts with label NOAA charts. Show all posts

Friday, October 11, 2019

Useful Info on Nautical Charts and Purpose of an Updated Chart


A nautical chart is a fundamental tool that can be quite helpful to the mariner. NOAA nautical charts are map that represents various configuration of the shoreline and also the seafloor. Additionally, it provides information on the depth of water, dangerous locations for navigation, various traits of aids to navigation, anchorages, and many other features.

The nautical chart is required by mariners for make navigation safer. They use the charts to plan/schedule voyages and navigate ships safely and cost-effectively. Federal regulations have made it necessary for most commercial vessels to carry nautical charts when they transit waters in the US.

Why is an updated nautical chart necessary?
Coast Survey cartographers make thousands of modifications to NOAA charts each year. Some are minor, while some are critical to safe navigation. Those critical iterations may include new obstructions, and the latest changes to navigation aids. Furthermore, shorelines keep changing all the time, due to natural forces or infrastructure improvements, so having a NOAA chart handy is a wise thing to do.

Where to get the updates?
The United States Coast Guard gives local notices to mariners, providing latest and essential navigational details. The National Geo-Spatial Intelligence Agency provides weekly notices to mariners for high-capacity vessels (operating in or more than 12 feet of water). You can also find information about chart corrections/modifications on NOAA’s weekly chart update web page on their official website.
Water-resistant paper nautical charts can be bought from a NOAA certified chart agent. It is convenient to order a chart online or have the chart delivered at your doorstep.

Wednesday, September 4, 2019

A Nautical Chart And Its Uses In Navigation


Among other several charts in navigation, a nautical chart is the most essential tool used by mariners. Everybody knows what a map is, and a nautical chart is also a type of map. An ordinary may show roads, buildings, trees, river, and other landmark structures in a region. Unlike an ordinary map, NOAA nautical charts may contain information such as hydrographic data, sea area, shoreline, seafloor, nearby coastal regions, water depths, heights of land, and water currents. If you are looking for a specific landmark in an ocean, buy accurate NOAA charts online.
  • Making of nautical charts
Many professionals, including engineers, geologists, biologists, military, and experts from research departments of various sectors contribute their parts when making a nautical chart. They use advanced technologies to study the vast areas of a water body. It takes time and efforts to not down important notes after thoroughly evaluated the chain of historical events and the concurrent scenario. This means NOAA nautical charts contain all the important facts and data required in sea navigation.

Why NOAA?
Since its establishment in 1970, NOAA agency of the US Department of Commerce monitors the operation of marine activities regarding the conditions of the oceans and the atmosphere. The agency issues warnings or alert system at the time of danger and unfavorable weather conditions. It holds responsible for providing guidelines and rules for the use and the protection of coastal and ocean resources.

Overview of Raster Charts Used By Sailors and Boaters

When there is an electronic image of the familiar paper chart, obtained by the help of a highly accurate and detailed scanning process,...