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Coastal Navigation

Coastal Navigation meets on Zoom, Tuesday evenings from 6 to about 8 pm. Before the first class, we'll mail out the training chart, parallel rules, and dividers that you'll use for the homework each week, along with the textbook, and the Eldridge Tide and Pilot Book that we'll use for tide and current problems starting in week three.

We'll begin classes 2 through 6 by going over the homework from the previous week and reviewing the most important concepts and skills. Each class will also be recorded. So if you have to miss a class, you can download the Problem Set, read through the class slides and textbook, listen to the lecture online, and be confident of catching up the next week.

CLASS 1: 3/2 & 3/18 2021

TOPICS

Levels of Navigation

Navigator's Responsibility

Navigator's Tools

Latitude and Longitude

The Compass Rose

Chart Symbols

Plotting a Course

Dead Reckoning

CLASS 1 MATERIALS

Problem Set 1 (pdf)

Class 1 Slides (2MB pdf)

Suggested reading:  Coastal Navigation chapters 1, 2, 3 & 5

CLASS 2:  3/9 & 3/25 2021

TOPICS

Compass Correction

Lines of Position

Compass Bearing

Range

Depth Contour

Aids to Navigation (Buoys & Lights)

Reliability of Fixes

CLASS 2 MATERIALS

Problem Set 2 (pdf)

Class 2 Slides (57MB pdf)

Suggested reading: Coastal Navigation chapters 4, 5, 9, 10 & 12.

CLASS 3: 3/16 & 4/1 2021

TOPICS

Danger & Turning Bearings

Back Bearing

Tidal Forces

Tide Tables

Height of Tide at any time

Rule of 12ths

Correcting for Leeway

Estimated Position

CLASS 3 MATERIALS

Problem Set 3 (pdf - year 2021)

Cuttyhunk Pond chart (jpg) to use in answering question 3

Class 3 Slides (1MB pdf)

Suggested reading:  Coastal Navigation chapters 6, 10 & 12.

CLASS 4:  3/23 & 4/8 2021

TOPICS 

Reversing Currents

Current Tables

Velocity of Current at any time

The Cape Cod Canal

Current Charts

Set and Drift

The Current Triangle

Solving Current Problems

 CLASS 4 MATERIALS

Problem Set 4 (pdf - year 2021)

Class 4 Slides (250KB pdf)

Suggested reading: Coastal Navigation chapters 7 & 8.

Suggested reading:  Eldridge Tide and Pilot pp 44-45 (Cape Cod Canal regulations).

CLASS 5: 3/30 & 4/15 2021

TOPICS 

Review of Current Problems

Woods Hole and Quicks Hole

Ranges and Bearings in Current

Running Fix

CLASS 5 MATERIALS

Problem Set 5 (pdf - year 2021)

Class 5 Slides (31MB pdf)

Running Fix Slides (pdf)

Suggested reading:Coastal Navigation chapter 11.

CLASS 6: 4/6 & 4/22 2021

TOPICS 

GPS:

Waypoints, Range & Bearing

Cross-track Error

Speed & Course Over Ground

Electronic Charts

AIS

CLASS 6 MATERIALS 

 Class 6 Slides (45 MB pdf)

Review Problems

Review Answers

 

SOME HELPFUL LINKS

Coast Guard Navigation Center

NOAA Office of Coast Survey

Tides

Automatic Identification System (AIS)