Browser-based maritime radar training

Radar Skills for Every Mariner

A high-fidelity radar simulator for practicing relative motion, CPA/TCPA, collision avoidance, and COLREGS Rule 19 — right in your browser.

Whether you're pursuing your ASA 120 Radar Endorsement or just want to be a safer navigator — one subscription covers both.

Runs in any browser — Mac, PC, Chromebook. No install required.
Monthly
$9.99/ first month
First month $9.99, then $14.99/month
  • Full simulator access
  • All training environments
  • Browser-based access
  • Cancel anytime
BEST VALUE
Annual
$119/ year
$9.92/mo · Save 34%
  • Full simulator access
  • All training environments
  • Browser-based access
  • Save about 34% vs monthly
ASA 120 Radar Endorsement Course
One-time payment for the complete ASA 120 curriculum — permanent access, no recurring fees.
$500
  • All 8 structured training modules
  • Graded sim quizzes with instructor answer keys
  • Personal gradebook tracking your scores
  • Google Classroom integration for course assignments
  • Permanent access — no recurring fees

Already have course or complimentary access?

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Realistic Scope
Canvas-rendered radar with gain, sea/rain clutter, trails, EBL/VRM, and RACON
Navigation Training
Range/bearing fixes, position determination, and GPS discrepancy diagnosis
Collision Avoidance
CPA/TCPA calculation, relative motion analysis, and Rule 19 decision practice

Frequently Asked Questions

TRAINING USE ONLY — This simulator is intended for maritime education and practice. It is not a certified navigation system and must not be used for actual vessel navigation or collision avoidance.