Data Parameters

Here is the list of parameters and their estimated sizes that need to be considered in computing the data telemetry needs for the FleetLink system. For a list of the specific parameters (field names, description, units, and precision) being telemetered from a vessel to shore, click here.

From Ship to Shore

Shipboard Science
Description Format Estimated record size (bytes)¹
wind speed/direction %6.2f %6.2
%5.1f %5.1f
%5.1f %6.1f
%6.1ff %6.1f
55
barometric pressure %7.2f 17
humidity %8.3f %8.3f 26
air temperature ² %7.3f %5u
%5u %5u
32
short wave radiation (visible) %7.1f 17
long wave radiation (IR) %7.1f %7.1f
%7.1f %7.1f
38
precipitation %7.1f 17
sea surface temperature %7.3f %5u
%5u %5u
32
ships position (GPS) ² %8.4f %9.4f 27
date/time of observation (utc only)² %2u %2u %4u %6.124
ship heading (compass bearing) ² %3u 13
Totals:
298 bytes/minute
17,880 bytes/hour

 

Shipboard Vessel Operation/System Status
Description Format Estimated record size (bytes)¹
Bilge water level? ² Flag or value? 15
Engine Temperature? ² Flag or value? 15
Engine RPM? ² Flag or value? 15
Inputs from onboard alarms/alerts? ² Flag or value? 15
What else? ² tbd tbd
Totals:
60 bytes/minute
3,600 bytes/hour

 

Trawl Net/Subsurface
Description Format Estimated record size (bytes)¹
pressure ² %7.2f 17
temperature ² %7.3f %5u
%5u %5u
32
Totals:
49 bytes/minute
2,940 bytes/hour

 

Fish Catch Information
Description Format Estimated record size (bytes)¹
This needs to be defined² Muli-line ASCII text 350 (5 x 70)
Totals:
350 bytes/message
1,400 bytes/day

 

E-Mail
Description Format Estimated record size (bytes)¹
Message² Muli-line ASCII text 1400 (20 x 70)
Totals:
1,400 bytes/message
2,800 bytes/day

 

From Shore to Ship

E-Mail
Description Format Estimated record size (bytes)¹
Message² Muli-line ASCII text 1400 (20 x 70)
Totals:
1,400 bytes/message
2,800 bytes/day

 

Images
Description Format Estimated record size (bytes)¹
Seasurface Temperature² GIF 2000-60000³
Currents² GIF 2000-60000³
Ocean Color² GIF 2000-60000³
Position of fronts, eddies² GIF 2000-60000³
Sea State/wave heights² GIF 2000-60000³
Totals:
2,000-60,000 bytes/image
4,000-120,000 bytes/day

¹ Assumes 10 bytes for record identification and record termination
² Estimated values
³ Depends on complexity of image


Contributed by: R. Groman
Last modified: March 20, 2000