Furuno FMD-3100 Operator's Manual page 35

2. OPERATIONAL OVERVIEW
CM-93 vector format
The CM-93 charts require a contract with applicable provider. These charts are from
a private source and they cannot be used as a substitute for paper charts under any
condition. To emphasize this point these charts are called "Non-ENC" charts in this
manual. Note that some eToken dongles from the FEA-2xx7 can be used. These are
labeled "JeT FURUNO XXXXX".
This ECDIS accepts the following C-MAP chart types: CM-ENC, Professional, Profes-
sional+ and Jeppesen Primary ECDIS Service.
C-MAP produced official ENC chart that complies with the IHO's (International Hydro-
graphic Organization's) S-57 Edition 3 product specification. When used in an ECDIS,
the ENC data improves the safety of navigation at sea.
ARCS raster format
ARCS charts are digital reproductions of British Admiralty (BA) paper charts. They re-
tain the same standards of accuracy, reliability and clarity as paper charts.
Zooming into the ARCS chart can be useful for magnifying a complex detail, however
this decreases the density of the data displayed, and can give a false impression of
the distance from danger.
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