RadarPlot Pro Trainer

Radar Plotting Trainer is the essential iOS app for maritime officers, cadets, and navigators learning radar transfer plotting—the manual ARPA-style technique used globally on modern ships. Practice the standard 6-minute plotting method on an accurate 12 nautical mile scale radar display with real-time calculations, instant feedback, and collision avoidance maneuvers.


CORE FEATURES
Plotting & Observations

• Record successive radar observations (time, range, bearing)

• Track multiple targets simultaneously with color-coded plots

• North-Up stabilized display matching academy standards

• Configurable plot interval (default 6 minutes) and range scale

Automatic Calculations


• Relative Motion Line (RML) drawn automatically through target positions

• Closest Point of Approach (CPA) with distance, bearing, and time to CPA

• Relative Motion Speed (RMS) calculated using the 10th rule

• Target true course and speed derived from collision avoidance geometry

• E-point (vector origin) constructed from own ship motion


Maneuver Planning


• Set desired minimum passing distance (required CPA circle)

• Select maneuver execution point (MX) on the RML

• Visualize new course-only and speed-only solutions

• Advanced relative motion line (ARML) for precision planning

• Instant calculations show new course/speed needed to achieve target CPA


Training Tools

• Built-in training scenarios with step-by-step handouts

• Answer key reveal mode to check your work

• Hide answers mode for independent practice

• Hints toggle to display/hide guidance

• Save and load sessions locally


Interactive Visualization

• Pinch-to-zoom up to 5x magnification for detailed inspection

• Pan across the display when zoomed

• Double-tap to reset zoom instantly

• Visual zoom with scale unchanged (calculations unaffected)

• Color-coded vectors showing own ship motion, target motion, and maneuver geometry

PERFECT FOR
• Maritime academy students preparing for licensing exams

• Watch officers refreshing collision avoidance skills

• Training officers instructing the next generation of navigators

• Anyone mastering the 6-minute radar plotting method

TECHNICAL ACCURACY
Built to match international maritime training standards with precise geometric calculations, proper handling of true motion vectors, and accurate CPA computation. Supports all maneuver scenarios including edge cases (stopped own ship, parallel targets, and more).

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