Simrad CE33 ChartSounder Manual page 48

Chapter 4-4 CE33 Position menu
Reset log - or insert alternative start figure by altering the value in
the "Log 1" and/or "Log 2" line. Press [CLR] to reset the figure, and
press the numeric keys 0-9 to alter the figure.
Display position as - the position can be shown in latitude/
longitude, Loran C or decca coordinates (after selecting chain from
the Setup menu). Toggle with +/-.
Delta position - some paper charts do not indicate a datum, but
instead they have a notation to an offset or delta position to WGS84.
Use numeric keys to key in the position correction.
Start position - can be inserted if the exact start position is known.
Speed and course filter level - there is a filter of 10 steps available
(0= fast response, 9= stable readout).
Display speed as - SOG Speed Over Ground or STW Speed
Through Water. Toggle with +/-.
To receive STW information from external instrument (via NMEA
port) will require that NMEA sentence VHW or "Log speed sensor"
are set to ON. Refer to section 9.1 and 9.2.
Course and bearing as - readings of course and bearing can be
made in either MAGNETIC or TRUE. Toggle with +/-.
Altitude mode - is preset to automatic, but can be changed to
manual. Toggle with +/-.
Manual antenna altitude - is preset to 5 meters. Insert actual
antenna height if manual altitude mode is selected. This value will
not be shown anywhere else, but will be used for computations.
Display depth in position display - if set to YES, then the depth
will be shown.
When set to NO, then "Compass" from connected sensor will be
shown instead.
Time - can be set to UTC or local. Toggle with +/-
Correct actual time and date by means of the numeric keys.