Autopilot/BNWAS
critical
Known Models (3)
Furuno Electric (Japan) NAVpilot 700/711 + BNWAS BR-500
Heading/Track Control + BNWAS
· Ship Steering Control
Voltage: 24V DC
type: Autopilot + BNWAS
size_range: ['NAVpilot 700', 'NAVpilot 711', 'BR-500 BNWAS']
variant_count_approx: 3
period_start_year: 2012
period_end_year: None
drive_type: Electric
construction: Control unit, adaptive steering, BNWAS module
Common Failures:
- • Heading sensor interface loss
- • Rudder feedback signal noise
- • BNWAS button mechanical wear
- • Adaptive control algorithm issues in ballast condition
Service: Standard autopilot/BNWAS maintenance. Heading sensor check quarterly. BNWAS test daily.
Spares: Furuno global. Lead time: 1-3 weeks.
Kongsberg Maritime (Norway) K-Pilot / K-Bridge Autopilot
Heading/Track Control
· Ship Steering Control
Voltage: 24V DC
type: Autopilot (Integrated Bridge)
size_range: ['K-Pilot', 'K-Bridge AP']
variant_count_approx: 2
period_start_year: 2005
period_end_year: None
drive_type: Electric
construction: Integrated bridge autopilot, DP-integration capable
Common Failures:
- • Heading sensor interface issues
- • Rudder feedback drift
- • DP/autopilot switchover glitches
Service: Standard autopilot maintenance. DP integration test quarterly.
Spares: Kongsberg Maritime. Lead time: 2-4 weeks.
Raytheon Anschütz / Wärtsilä (Germany/Finland) NautoPilot 5000 / BNWAS
Heading/Track Control + Bridge Watch Alarm
· Ship Steering Control
Voltage: 24V DC
type: Autopilot + Bridge Navigational Watch Alarm System
size_range: ['NautoPilot 5000', 'NautoPilot 5100']
variant_count_approx: 2
period_start_year: 2010
period_end_year: None
drive_type: Electric
construction: Control unit, heading sensor interface, rudder feedback, BNWAS panel
Common Failures:
- • Heading sensor (gyro/satellite compass) interface failure
- • Rudder feedback potentiometer drift
- • BNWAS alarm reset button mechanical failure
- • Control algorithm oscillation from incorrect PID tuning
- • Weather adaptation malfunction in heavy seas
Service: Heading sensor calibration check quarterly. Rudder feedback calibration annually. BNWAS test daily (crew must acknowledge within set time). Complete system check at annual survey.
Spares: Wärtsilä Voyage (Kiel). Lead time: 2-4 weeks.