4.1 The RNC used in RCDS should be the latest
edition of that originated by, or distributed on the authority of,
a government authorized hydrographic office and conform to IHO standards.
RNCs not on WGS 84 or PE-90 should carry metadata (i.e., additional
data) to allow geo-referenced positional data to be displayed in the
correct relationship to SRNC data.
4.2 The contents of the SRNC should be adequate
and up-to-date for that part of the intended voyage not covered by
ENC.
4.3 It should not be possible to alter the contents
of the RNC.
4.4 - 4.8 All paragraphs apply to RCDS.
4.9 Paragraph does not apply to RCDS