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Fix HelperROT.msg #34

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Dec 18, 2023
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Fix HelperROT.msg #34

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ecf79a9
Fix HelperROT.msg
hhenry01 Dec 15, 2023
7f284d7
Clarified description
hhenry01 Dec 15, 2023
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11 changes: 8 additions & 3 deletions msg/HelperROT.msg
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Original file line number Diff line number Diff line change
@@ -1,3 +1,8 @@
# Rate of turn of the ship, negative for CCW turning and positive for CW turning.
# Unit: degrees/hour
float32 rot
# Rate of turn of the ship, negative for CCW (min -126) turning and positive for CW (max +126) turning.
# Special unit: https://documentation.spire.com/ais-fundamentals/understanding-ais-performance-in-high-traffic-zones/
# = int(4.733 * sqrt(degrees/minute))
# -126 and +126 indicate CCW/CW at a rate of up to 708 degrees/minute or higher
# -127 and +127 are special values indicates CCW/CW turning of more than 10 degrees/minute (only used if the reporting
# vessel does not have an external ROT indicator device available)
# -128 means no rot info
int8 rot