The Adlard Coles Book of Radar

The Adlard Coles Book of Radar

by Borje Wallin

NOOK Book(eBook)

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Overview

Radar is notoriously tricky to operate and 'read' correctly for
collision avoidance either with the land or with other vessels. But
used by an informed operator it is an immensely valuable navigation
tool - especially in poor visibility. GPS will tell you where you are,
but it won't tell you if there's another boat in that spot!



Rather than taking a theoretical, academic approach, this book is
highly practical and hands on - complementing the radar owner's manual
and explaining what the operator really needs to know when faced with actual situations at sea.



Packed with illustrative photos, charts and radar screen shots, this
book gives guidance from a real life, on-the-water perspective, and
will enable readers to solve problems on the spot.

Product Details

ISBN-13: 9781472906755
Publisher: Bloomsbury Publishing
Publication date: 09/12/2013
Sold by: Barnes & Noble
Format: NOOK Book
Pages: 96
File size: 34 MB
Note: This product may take a few minutes to download.

About the Author

Borje Wallin got his first boat at the age of 12, spending summers sailing in the Stockholm archipelago. Having served as mate, chief mate and master of passenger vessels in a 40 year career on the water, he has used his experience to write several books on navigation and seamanship.

Table of Contents

Part 1 Getting Started

1 Starting up 2

The parts of a radar set 3

Getting a picture 5

Summary 10

2 Interpreting the picture 11

Radar horizon 12

Refraction 12

Radar beam 13

Pulse length 14

Radar shadow 15

The quality of different targets 16

3 Disturbing phenomena 22

Sea Clutter 22

Rain Clutter 23

Side Lobe contacts 24

Indirect contacts 24

Interference 26

Blind sectors 26

4 Display modes 27

Head-up 27

North-up 28

Course-up 28

Off centre 29

True motion 29

Radar overlay 30

Sources of technical error 31

Broadband radar 31

Part 2 Navigation

5 Navigating by radar 34

Identifying your position 35

Determining direction 36

Planning ahead 38

6 Pilotage 39

Controlling your track 42

Parallel indexing 44

Altering course 45

Clearing ranges 46

Stopping in time 46

Identifying objects 47

The human factor 49

Making landfall 50

Summary 51

Part 3 Collision avoidance in restricted visibility

7 Proceeding with caution 53

The importance of a look-out in restricted visibility 54

Finding a safe speed 55

8 Locating and monitoring moving targets 58

Guard Zones 58 Trail function 59

9 Assessing the risk of collision 60

Relative motion 60

Using the EBL 61

Using the Trail function 62

MARPA 63

Plotting 65

Radar assisted collision 66

The relative plot in practice 68

10 Taking avoiding action in the open sea 70

Altering course 70

Planning avoiding actions in advance 72

Avoiding actions in practice 75

11 Close-quarters situations 78

Avoiding action in restricted visibility and in confined waters 79

Follow-up 81

In visual contact 82

12 The human element 84

Wahkuna and P&O Nedlloyd Vespucci 85

Whispa and Gas Monarch 86

13 Seeing and being seen 89

Radar reflectors 89

Radar transponders 90

Glossary 92

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