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By using this website and the NOAA Electronic
Navigational Charts (NOAA ENCs®) distributed here, you acknowledge
that you have read, understood, and accepted the terms and conditions
stated in this User Agreement. NOAA reserves the right to change this
Agreement at any time and without notice. Your use of this website
and/or the Electronic Navigational Charts available here shall
constitute your agreement to be bound by any this Agreement and any
Description of NOAA ENCs®
The NOAA ENCs distributed here are a geo-referenced
database(s) of NOAA nautical chart features and their attributes,
published by NOAA in the format of the International Hydrographic
Organization S-57 Standard, "IHO Transfer Standard for Digital
Hydrographic Data." NOAA updates the ENCs for Notice to Mariners on a
weekly basis (timing of their availability is not guaranteed). NOAA
ENCs are an official product of NOAA.
The NOAA ENCs are intended for navigational use. They
are intended to be used in their electronic form only. You may
download, use, and redistribute them without restriction, and without
payment to NOAA, except as noted herein. They may be used to meet
federal chart carriage regulations published in the Code of Federal
Regulations. On November 15, 2005, the regulations were as stated below.
These regulations may change, and mariners are advised to check the
Code of Federal Regulations for their current status.
On May 2,
2001, the United States Coast Guard amended the United States chart
carriage regulations to permit government vessels to use electronic
charting and navigation systems in lieu of paper charts.
On July 1,
2002, the International Maritime Organization's (IMO) amendments to
chapter V of the International Convention for the Safety of Life at
Sea (SOLAS) became effective after being accepted by the Contracting
Governments to SOLAS (Jan 2002) and the IMOs Maritime Safety Committee
(Dec 2000). These amendments, in part, allowed an electronic chart
display system (ECDIS) using ENCs to be accepted as meeting chart
carriage requirements of SOLAS Chapter V.
15, 2002, the United States Coast Guard issued a statement of policy
to bring its regulations into agreement with SOLAS Chapter V (as
amended by the changes taking effect July 1, 2002). The policy statement
said that, if a ship has an approved ECDIS using official ENCs and
installed according to SOLAS, Chapter V, the ECDIS will be considered
as meeting the ship's nautical chart carriage regulations. The ships
that are affected are:
U.S.-flagged ships of 150 or more gross tons that engage on international voyages.
U.S.-flagged ships certificated solely for service on the Great Lakes and the St. Lawrence River.
Foreign-flag ships to which SOLAS, Chapter V, applies that are operating on the navigable waters of the United States.
This policy is
not applicable to U.S.-flag ships engaged only on domestic voyages.
These ships must continue to comply with existing navigation equipment
requirements until the chart carriage regulations are formally
Limitations on Use
NOAA ENCs® used by the party downloading them
are official and meet federal chart carriage regulations as explained
herein. NOAA ENCs® may be redistributed, but redistributed NOAA ENCs
are NOT considered official NOAA ENCs, and do not meet federal chart
carriage regulations for regulated vessels unless redistributed by a
"Certified NOAA ENC Distributor" or by a "Certified NOAA ENC Value
Added Distributor". Click here for further information on ENC Distributorships.
Copying of the
NOAA ENCs to any other server or location for further distribution is
discouraged unless the following guidelines are followed:
If these NOAA
ENC's are incorporated into any other product in a form other than as
provided by NOAA, the producer of that product assumes full liability.
Weekly updates to the ENCs are done on a "best
efforts" basis. The timing of their availability is not guaranteed.
You are responsible for ensuring that your ENCs are the most current
edition and that the most recent updates have been applied.
While NOAA has
accuracy standards for each step in the data collection and chart
production process, much of the depth information found on NOAA charts
is based on surveys conducted before 1940, the shoreline is more than
20 years old, and paper charts used to be compiled manually. Click here for more information regarding the accuracy of electronic charts.
Trademarks and Copyright
"NOAA®" and the NOAA® emblem are registered trademarks
of the National Oceanic and Atmospheric Administration.
NOAA ENC® is a registered trademark of the National Oceanic and Atmospheric Administration.
link below signifies acknowledgement of having read and agree the
above statement and the wish to proceed to the NOAA ENC® Downloads
Chart Portal はこちら
ここで使用している NOAA の ENC のダウンロードはこちら
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