ShipObservationCode - SHIP SURFACE OBSERVATION CODE FM...

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D — 1 September 3, 2007 SHIP SURFACE OBSERVATION CODE, FM 13-IX SHIP I. SHIP SURFACE OBSERVATION CODE FORMAT Like the synoptic surface observation code for land stations, the ship surface observation report is transmitted at 6-hourly intervals at the standard hours of observation which are: 0000, 0600, 1200, and 1800 UTC. The following shows the symbolic form of the message for the synoptic weather report from a ship station. A. SYMBOLIC FORM OF THE MESSAGE M i M i M j M j DDDD YYGGi w 99L a L a L a Q c L o L o L o L o i R i X hVV Nddff (00fff) 1s n TTT 2s n T d T d T d 4PPPP 5appp 7wwW 1 W 2 8N h C L C M C H 9GGgg or 29UUU 222D s V s (0s n T w T w T w ) (1P wa P wa H wa H wa ) (2P w P w H w H w ) (3d w1 d w1 d w2 d w2 ) (4P w1 P w1 H w1 H w1 ) (5P w2 P w2 H w2 H w2 ) ( 6I S E S E S R S or ICING + plain language " # $ % $ & $ ( $ ) (70H wa H wa H wa ) (8s w T b T b T b ) (ICE + c i S i b i D i z i or plain language " # $ % $ & $ ( $ ) ________________________________________________________________________
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D — 2 September 3, 2007 B. DEFINITION OF GROUPS 1. Section 1 M i M i M j M j - Bulletin Header This group identifies the bulletin as a collection of marine observations. In a collection of ship, manned buoys, or automatic buoys, the group will be encoded as BBXX and will be the first line of the bulletin. This group is attached at the collection center where the bulletin is prepared. DDDD - Ship International Call Sign . This is a four letter code which is assigned to each ship. The first two letters identifies the ship's country of registry. YYGGi w - Observation Time and Wind Indicator Group . Unlike the land observation bulletins where the date/time group is pulled out of the report and is placed after the bulletin header, this group remains with the ship report following the ship call sign. Thus, in a bulletin of ship reports there may be one report from one time and another report from a different time. When looking at a bulletin of ship reports, be certain to look at the date/time group to know when the observation was taken. YY - Day of the month (UTC) on which the observation was taken. GG - Time of the observation in UTC to the nearest whole hour. i w - Wind speed indicator. See table 1855. . Code table 1855 i w — Wind speed indicator Code figure Description 0 Wind speed estimated, reported in meters per second. 1 Wind speed obtained from anemometer, reported in meters per second. 3 Wind speed estimated, reported in knots. 4 Wind speed obtained from anemometer, reported in knots. / Wind speed not available. 99L a L a L a - Ship Latitude Group 99 - Identifier for the ship latitude group. L a L a L a - Latitude in tenths of degrees. Q c L o L o L o L o - Ship Longitude Group Q c - Quadrant of the globe in which the ship is located. See code table 3333 and figure 1.
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D — 3 September 3, 2007 Code table 3333 Q c — Quadrant of the globe Code figure Latitude Longitude 1 North East 3 South East 5 South West 7 North West Figure 1. Quadrant of the Globe Greenwich (Prime) Meridian Equator W E N S Q = 7 Q = 5 Q = 1 Q = 3 c c c c L o L o L o L o - Longitude in tenths of degrees.
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