B&G H2000 Pilot *DISCONTINUED* - Manual (Page 54)

HB-0844-04
2-35
Heel Angle is a useful option that improves the accuracy of some of the
calculated functions. Heel can be used to give some idea of the wind
pressure when abnormal shear or gradient is affecting the True Wind Speed.
It can also be checked when going upwind to ensure that the boat is not
sailed over its optimum heel angle.
2.11.21 Leeway
Menu Heading: NAVIGATE
Function Text: LEEWAY
Update Rate: Once per second
Units: Degrees
Note
Requires clinometer for heel.
Leeway is the angle between the boats heading and its course through the
water. The difference is caused by the sideways slip that the boat has when
going upwind. For the Hydra to be able to measure this it needs to know the
heel angle, and hence a clinometer must be fitted. Leeway is of great
importance in the calculation of Dead Reckoning, since leeway can
considerably affect the dead reckoned position.
2.11.22 Layline Distance
Menu Heading: PERFORM
Function Text: LAYLINE
Update Rate: Provided by position fixer
Units: Nautical miles
Note
Requires NMEA 0183 interfaced position fixing system transmitting the ZDL
sentence.
If tacking upwind or downwind to a waypoint, this function displays the
distance of both left and right-hand laylines by alternating the display
between the two. An L or an R is shown in the right-hand digits to signify Left
or Right laylines respectively. This function is useful when nearing a
waypoint. When the value reaches zero, it is time to tack or gybe for the
mark. The calculation should be corrected for any tidal offset.