Navigation B — Instruments — Mashit 30

The earth and charts, stars, time, compasses, echo sounder and log, GPS, radar and radio.

193 questions. The exam: 50 questions, pass mark 43, 60 minutes.

What you can do here

• Question bank — every question by topic, with the correct answer.
• Mock exam — built like the official exam.
• Topic practice — one topic at a time, with instant feedback.

The categories in the paper

• The earth, coordinates and charts
• Sun, moon and stars
• Time and time zones
• Compasses, autopilots and steering
• Measuring and navigation instruments
• Radar
• Radio communications
• Distress, beacons and rescue

Study by topic

• Radar — 17 questions. Range, discrimination, controls and detecting risk of collision
• Radio communications — 50 questions. VHF, channels, antennas, DSC and calling procedures
• NAVTEX — 11 questions. Reception, frequencies, the transmitter network and message types
• Distress and rescue — 30 questions. MAYDAY, PAN-PAN, EPIRB, SART and GMDSS
• Compasses — 18 questions. Magnetic, gyro, fluxgate, deviation and variation
• GPS — 11 questions. Initialising, controls, accuracy and speed over ground
• Echo sounder — 14 questions. The transducer, its care and comparing the sounding with the chart
• Time and time zones — 10 questions. UTC, zone time, local time and the date line
• Stars and sky — 13 questions. The Pole Star, constellations and the sun's motion
• The earth and charts — 14 questions. Latitude and longitude, the nautical mile and distances