Raymarine ST4000+ Owner's Handbook Manual

Also see for autopilot ST4000+: Owner's handbook Quick reference Owner's handbook Service manual Service manual

Contents

Raymarine ST4000+ Owner's Handbook Manual Manual pdf 17 page image

Chapter 2: Basic Operation 92 Basic Operation1. Note the required new heading.2. Select standby for manual steering, so you can bring the boat tothe new heading MANUALLY.3. Select auto: allow the boat to settle onto course, then bring theboat to the final course in 1° steps using the -1 or +1 keysGusting conditionsIn gusting conditions, the course may tend to wander slightly,particularly if the sails are badly balanced. If you take the followingprecautions, the autopilot will be able to maintain competent controleven in gale force conditions:• You can significantly improve course keeping by improving thesail balance:• do not allow the boat to heel over excessively• ease the mainsheet traveller to leeward to reduce heeling andweather helm• if necessary, reef the mainsail a little early• In very strong winds and large seas, you should avoid sailing withthe wind dead astern:• ideally, bring the wind at least 30° away from a dead run• in severe conditions, you may also need to remove themainsail and sail under headsail only2.3 Adjusting autopilot performanceDuring normal autopilot operation in any mode you can maketemporary adjustments to the response level and rudder gainNote: You will lose these temporary changes to response level andrudder gain whenever the system is powered off then on again. Youcan make permanent adjustments in Dealer setup (see page 96).Changing the response level (AutoSeastate)The response level controls the relationship between the autopilot’scourse keeping accuracy and the amount of helm/drive activity.• Response Level 1: AutoSeastate on (Automatic deadband)This setting causes the autopilot to gradually ignore repetitiveboat movements and only react to true variations in course. This81131_8.book Page 9 Thursday, October 7, 2004 11:03 AM