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Introduction

HNC/Ad Certificate Navigation
Specifically designed for students preparing for HNC/Ad Celestial Navigation, Chartwork and Tides, Sailings, or for students wishing to regain knowledge before preparing for OOW SQA exams.
Plane-Parallel-Mercator-Great Circle
Parallels and Meridians
D. Lat
D. Long
Course to Steer
Parallel Sailing
Speed, Distance and Time
Plane Sailing Explained
Plane Sailing Course and Distance
Plane Sailing-finding final position
The Daily Run
ETA explained
Mercator Sailing Explained
Mercator Sailing Examples
Great Circle and Vertex
Vertex and Napier’s Wheel Explained
Napier’s Wheel
Great Circle Distance Method 1
Great Circle initial and final course method 1
Great Circle method 1-vertex between initial and final position
Great Circle method 1-vertex before initial position
Great Circle method 1-vertex after final position
Great Circle method 1-sailing between Hemispheres
Great Circle method 2-calculating distance
Great Circle method 2-initial and final course
Great Circle method 2-vertex between positions
Great Circle method 2-vertex before initial position
Great Circle method 2-vertex after final position
Great Circle method 2-sailing between Hemispheres
Composite Great Circle Sailing
Gnomonic Charts
Gnomonic Chart example
Sailings example questions
Sailings example questions 1- 13
sailings example 1
Sailings example 2
Sailings example 3
Sailings example 4
Sailings example 5
Sailings example 6
Sailings example 7
Sailings example 8
Sailings example 9
Sailings example 10
Sailings example 11
Sailings example 12
Sailings Example13
New Lesson
Tides explained
Tides theory
Tide Levels sketch
Heights sketch
Heights sketch
Sample calculations for height of Tide
European Tide question explained
Pacific tide question explained
Tidal Stream Atlas
Tidal Stream Tables
Co-Tidal Charts
Tides Example questions
Example Questions 1-9
Example 1
Example 2
Example 3
Example 4
Example 5
Example 6
Example 7
Example 8
Example 9
Celestial Navigation
The sextant
Sextant errors
Chronometer and Time
Celestial Sphere
Nautical Almanac
Compass and Gyro Error
Calculating Compass and Gyro Error
Amplitudes Sunrise and Sunset
Polaris Latitude
Mer Pass Sun
Mer Pass Star and Planet
Marq St Hilaire Sun
Marq St Hilaire Planet
Position Fixing with Intercepts
Calculating Twilight
Star Sights
Star Plot
star plots MPP method 1 and method 2
Star Plot outside cocked hat
Star Plot 4 stars
Star plot inside cocked hat
Simultaneous star plot examples
Example simultaneous plots video
Celestial Navigation Example questions
Questions
Amplitude 1
Amplitude 2
Amplitude 3
Amplitude 4
Azimuth 1
Azimuth 2
Azimuth 3
Azimuth 4
Azimuth 5
Intercept 1
Intercept 2
Mer Pass 1
Mer Pass 2
Polaris 1
Polaris 2
Chartwork
The Chart
Reading your position on a chart
Position Lines
DR and EP part I
DR and EP Part II
Dr and EP example
Transit Bearings
Relative Bearings
Compass and Gyro Error
Compass Error
Calculating ETA
Beam Bearings
CPA (closest point of approach)
Allowing Problem
Counteracting problem
Actual set rate and drift problem
Transferred Position Line (Running Fix)
Transferred Position Circle
Horizontal Sextant Angle (HSA)
Horizontal Angle
Horizontal Angle – bearings more than 90deg apart
Horizontal angle-two bearings 180deg apart
Horizontal angle – two bearings 90deg apart
Vertical Sextant Angle (VSA)
Luminous, Nominal, Geographical Ranges
Chartwork Example questions
Example questions 1-5
question 1
question 2
question 3
question 4
question 5
New Lesson
New Lesson
New Lesson
New Lesson
Radar
Plotting Basics – 1
Plotting Basics – 2
Aspect
Set Rate Drift
Set Rate Drift Exercise
Both vessels going on same course
Resuming our original course
Complete exercise-single plot
How to alter course
Altering Course at a specific range
Excercise-altering course
How to alter speed
Altering Speed at a specific range
Altering Speed – exercise
Multi Plot exercise 1-altering speed
Multi Plot exercise 2-altering course