MIL-PRF-89202B
Regulations of the IHO for International (INT) Charts
and Chart Specifications of the IHO (Chart #1)
2.4 Order of precedence. In the event of a conflict between the
text of this document and the references cited herein, the
text of this document takes precedence. Nothing in this
document, however, supersedes applicable laws and regulations
unless a specific exemption has been obtained.
3.
REQUIREMENTS
3.1 First Article. When specified (see 6.2), a sample shall be
subjected to first article inspection in accordance with 4.3.
3.2 Accuracy.
3.2.1 Horizontal accuracy. Absolute horizontal accuracy for
Littoral Planning Charts is l.0mm (50 meters) CE at the 90%
confidence level. See 6.4 for definition of CE.
3.2.2
Vertical accuracy.
3.2.2.1 Topographic. Absolute vertical accuracy (land) is one
contour interval LE at the 90% confidence level.
3.2.2.2 Hydrographic. Absolute vertical accuracy for depths
shown on Littoral Planning Charts is 0.3 meters (from 0 to 30
meters), and 1% of depth (greater than 30 meters), linear error
(LE), at a 90% confidence level. See 6.4 for definition of LE.
3.2.3 Hydrographic data accuracy. NGA strives to compile
Littoral Planning Charts with the most accurate information
available. NGA analysts compile charts from a variety of
sources, with varying accuracies. Often the metric accuracy
(expressed as circular and linear error at a certain level of
confidence) of the hydrographic and bathymetric data is unknown,
or the information is not available to NGA. In this case, a
subjective determination of accuracy is made, based on the
survey dates, scale, and originating agency of the source.
3.2.4 Displaced features. Feature symbols, which are
displaced for cartographic clarity, are excluded from the
accuracy requirement stated above.
5
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business