Skip to main content

CHARTS - WHO AND WHAT

Agencies:

Thoughts from the Miami Boat Show which NAUTICAL LOG is attending courtesy of Discover Boating. One of the things we picked up was Chart Catalog #1 covering the Atlantic Coast, ours was borrowed and never found its way back home. As the boating season is gradually getting underway for those of you who do not live in South Florida it is time to prepare. There is much to choose from in navigational software and electronic charting systems but who are the people behind the actual cartography. Federal Agencies in nautical charting are four (4) principals with some very important divisions - lets have a look.

The National Oceanic and Atmospheric Administration (NOAA) in the U.S. Department of Commerce is considered the lead agency. It is responsible for conducting research, making predictions, and gathering data about the oceanic and atmospheric components of the environment. NOAA's division National Ocean Service (NOS) is the primary civil agency responsible for the health and safety of our Nation's coastal and oceanic environment. Within NOS the Office of Coast Survey is responsible for producing and maintaining approximately 1000 charts that cover the coastal waters of the United States and its Territories. Its cartographers together with private contractors compile the necessary data and surveys to keep these nautical charts updated.

The National Geospatial-Intelligence Agency (NGA) has as its mission to provide timely, relevant, and accurate geospatial intelligence in support of national security. NGA publishes charts that cover the areas outside the United States. The Notices to Mariners are also published by NGA as is other nautical data.

The U.S. Army Corps of Engineers (USACE) is responsible for carrying out survey and dredging in federally maintained waterways. Results from the surveys are provided to NOAA for inclusion in NOAA charts. The USACE is authorised to produce maps, as they are termed in inland waterways, charts and publications for the waterways under its jurisdiction. Currently the USACE is working to produce a suite of electronic charts/maps that cover the inland waterways of the U.S.

The United States Coast Guard (USCG) is responsible for installing and maintaining navigational aids in U.S. coastal waters. Positions and characteristics of aids are furnished to NOAA for presentation on charts. The USCG is also responsible for publishing chart corrections in weekly Local Notice to Mariners (LNM) as well as maintaining the U.S. Light List.

Charts:

Harbor charts; 1:50,000 and larger.

Coast charts; 1:50,001 to 1:150,000.

General charts; 1:150,001 to 1:600,000.

Sailing charts; 1:600,001 and smaller.

Small-craft charts; 1:80,000 and larger.

Good Watch.

Comments

Popular posts from this blog

PERIGEAN SPRING TIDES

It sometimes happens that one is going to write a Post on a subject when lo and behold there is already an excellent one.  Such is the case today; so rather than repeat everything let me refer you to the source of that Post

At present we are experiencing Perigean Spring Tides which occur when the Moon is at perigee on its oval path that is the closest point to Earth.  One of the principal results are higher than usual Spring Tides as against the Neap Tides.

Should you be interested in the full explanation of this phenomenon then you might like to reference "Old Salt Blog" which has an excellent explanation of this event and uses all the correct terms - quite unlike our Media here in South Florida.

Good Watch.

FAKE NEWS

In recent years there has been a steady decline in the professionalism, accuracy and quality of the various Media outlets and the social media.  In the rush to get there first with a story the shoddy Media - lets call it the really shoddy social media - have resorted to making up stories.  When growing up in the late 30's and 40's this was called lying and got one punished in our house.

Fake news includes inaccurate and unsupported stories all of which in the last year have been published without correction or apology.  Now it seems this attitude has spread to the maritime blogs.  One blog which was generally pretty good about its posts has slipped in accuracy lately including quoting from European tabloids.  A recent post was about H.M.S. Vengeance and its missile launches off the coast of Florida part of its programme to Certify boat and crew  The story was an ill advised, inaccurate choice in subject matter as to what happened and how the incident was reported to a Foreign N…

SS EL FARO VDR TRANSCRIPT

NAUTICAL LOG has published Posts about this tragic ship sinking since the very first report of her loss.  Today the NTSB has released her VDR data in particular the Navigation Bridge voice recorder - it is not good.  This Post is compiled from multiple Media sources.

On October 01, 2015 the SS El Faro a freighter sank with all hands, 33 crewmembers lost their lives and no bodies were ever recovered though one was sighted by the USCG in a survival suit but not picked-up.  By an extraordinary search, resumed at the insistence of a U.S. Senator from the State of Florida, the VDR was found  and now after months of investigation some results have been released. 

The ship left Jacksonville, Fl. bound for San Juan, PR and sailed directly into the eye of a Category 4 hurricane named Joaquin.  Why the ship was where it was in the first place is a question yet to be fully answered but it seems that the Master was more focused on fuel consumption than plotting the path of the hurricane Joaquin an…