Before you start
Gather the appropriate supplies and review the specific equipment manual.
- Radar manual
- AIS if fitted
- COLREGs reference
Step-by-step instructions
Check equipment readiness
Confirm radar powers on and the display and heading information are trustworthy.
Choose appropriate range and gain
Adjust settings to see meaningful targets without excessive clutter.
Track changes over time
Monitor target bearing and range to assess closing risk rather than one isolated return.
Cross-check target types
Compare radar with AIS and visual observations; small or poorly reflective craft may be hard to detect.
Maintain collision avoidance
Preserve a proper lookout and take timely action consistent with COLREGs.
Safety note
Radar has blind spots and settings can hide targets. Do not depend on radar alone or confuse AIS targets with radar returns.
Key takeaway
A radar watch is a process of repeated observations and cross-checks.
Keep this job on your maintenance schedule
Save the topic as a maintenance task, choose a due date or engine-hour target, and record future service. Free and stored on your device.
Add to my maintenance plannerThis guide is for general education. Follow your equipment manufacturer’s instructions, current navigation guidance and applicable marine safety standards. When uncertain, use a qualified marine professional.