[CA] [CA11] Auto Pilot Not Going Steady to Wayooint

[Chuck - Raymarine - Moderator]

Welcome back to the Raymarine Forum Fish On,

Mild S-ing would be considered normal for an autopilot operating in track mode as it makes steering corrections to maintain the vessel's lateral position within a corridor surrounding the course line. The relative width of the corridor is determined by the autopilot's Response Level setting. The narrowest corridor will occur in conjunction with the when the Response Level has been configured to Performance ... this is the setting that I typically advise that powerboats utilize. Accordingly, please check that your autopilot's Response Level setting has been configured to Performance.

Should the symptoms also occur when the autopilot is commanded to operate in Auto mode rather than Track mode, then he reported symptom may also result from:

- running early versions of EV-1 and/or ACU autopilot software ... to correct, update the autopilot components with the latest available Raymarine product software updates. As indicated within the FAQ found here, a Pilot Factory Reset, Dockside Wizard, and sea trial (to detect deviation table) are required following a software update to the EV-1 or ACU. Should the items within this response have been checked and none found to have been responsible for the reported symptom, then the aforementioned Pilot Factory Reset and subsequent actions should be performed again.

- the vessel has not been sea trialed in a manner which would permit it complete determination of the sensed deviation table ... operate the vessel in the manner specified within the FAQ referenced above.

- poor installation location for the EV-1 CCU or a source of a magnetism has been stored in the location of the EV-1 CCU. When installed in a suitable location, the maximum deviation sensed by the autopilot (MENU->SET-UP->DIAGNOSTICS->ABOUT PILOT->DEVIATION) should be less than ten degrees.

- a fouled or poorly calibrated speed through water (STW) sensor. Should conditions prevent re-calibrating the speed through water sensor, should it be fouled (and can't be cleaned), or should it have failed ... to work around STW problems, change the autopilot's Speed source (MENU->SET-UP->AUTOPILOT CALIBRATION->VESSEL SETTINGS->SPEED INPUT) from Auto / Speed to SOG.

- air within the steering system ... bleed the hydraulic steering system.