B Sandspit^2054 J-lE (position lat/ long)
C Mount Dent Ch21B (position lat/long)
C Dundas I. WX2 (position lat/long)
C Klemtu WXl (position lat/ long)
C Cumshewa WX3 (position lat/ long)Weather Messages
A: 0030,0830, 1230,2030 - 'Synopsis for areas ' (as shown on diagram WIO).
B: 0105,0705, 1305, 1905.
C: Continuous broadcast (interrupted during live broadcasts)
'Synopsis and forecast for '(areas shown on diagram WlO plus reports
from local and lighthouse weather reporting stations).
Navigational Warnings
A: 0430 , 1630.
B: 0\05,0705, 1305, 1905.
C: Continuous broadcast (interrupted during live broadcasts... ).
Author's explanation: Station is identified as 'Prince Rupert' - radio callsign 'VAj' -
NAVTEX Identity letter [DJ, broadcasts MS! using NAVTEX (578kHz:); SSB voice on
2054kHzfrom a number of locations and on VHF voice, also from a number of different
locations - all controlled from Prince Rupert.
Weather forecasts are sent:- On NAVTEX (frequency 'A') at 0030, 0830 , 1230 and 2030 (synopsis
and forecasts for areas identified on diagram WlO, in ALRS Vol. 3). - By voice (13E) on frequency 'B' - 2054kHz - from Prince Rupert,
Sandspit (and other listed locations, not shown in this example) at 0105,
0705, 1305 and 1905. - By continuous voice broadcast on VHF 'Weather' channels (WX 1, WX2
and WX3) and Coastguard channel21B (Weather channels available on
VHF Radio with a 'US' option rather than 'International' only - see
Chapter 6 - VHF Radio controls).
Navigation Warnings - broadcast times - are also shown for the
frequencies listed.
Radio-Facsimile (Weatherfax) services
Although not part of the GMDSS system (vessels are not required
to carry radio-facsimile equipment as part of their GMDSS fitting) -some
vessels are fitted with a 'Weatherfax' receiver that can receive weather
'pictures' from radio stations transmitting information in the form of a
radio-facsimile.
In addition to a 'surface analysis', stations may transmit 'Routeing'
and 'Ship's Safety' information - including a 'prognOSiS' (forecast) of items
such as wind direction and strength; sea & swell wave height; ice edge;
22 THE NAUTICAL INSTITUTE