Dashew - Practical Seamanship.pdf

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Practical Seamanship
Seamanship
Practical
Essential Skills For The Modern Sailor
Steve & Linda
B
E
O
WU
L
F
1
DASHEW
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Also by Steve and Linda Dashew:
Circumnavigator’s Handbook
Bluewater Handbook
Offshore Cruising Encyclopedia: First Edition
Offshore Cruising Encyclopedia: Second Edition
In Search of the Perfect Yacht
Mariner’s Weather Handbook
Surviving the Storm: Coastal and Offshore Tactics
Dashew Offshore Video
Beowulf: The Epic Continues Video
Visit us on the internet at
http://www.setsail.com
Register your book at
register@setsail.com
Library of Congress Catalog Card Number 00-093461
Dashew, Steve and Linda, 1941-
Practical Seamanship
Copyright 2001, Beowulf, Inc.
All rights reserved. No part of this CD-ROM may be
reproduced or used in any form or by any means—graphic,
electronic, or mechanical, including photocopying, taping,
or information storage and retrieval systems without the
written permission of the publishers.
CD-ROM release history:
Version 2.1 February 2001
Beowulf, Inc.
PMB 163 - 4740 East Sunrise Drive
Tucson, Arizona 85718 USA
www.SetSail.com
CD-ROM designed and produced by
Elyse Dashew, EDX Communications
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D
EDICATION
The world of cruising is driven by dreamers. Dreamers design and
build the boats (otherwise they would be doing something more
profitable), and dreamers buy the products in hopes of fulfilling their
own vision—whether a weekend cruise or an open-ended circum-
navigation.
And while most boats sit tied to the dock, to be used only on occa-
sion, a very few actually head out towards the unknown. Perhaps it is
a two-week cruise to Martha’s Vineyard or the Channel Islands from
home port. Or maybe it’s to Mexico with thoughts of the South
Pacific. Wherever they sail, these folks are making their dreams
come true. And it is the “doers,” those making it happen, to whom we
dedicate
EDICATION
It wasn’t that many years ago
that sailors took pride in
their seamanship. It was
these skills, after all, which
kept them safe, helped them
to make a living, and
brought approval in the eyes
of their contemporaries.
Study this image of the
schooner Mariette, every
inch of her canvas set per-
fectly as she slides along on
a beam reach. She’s one of
Nathaniel Herreshoff’s won-
derful designs. Built in 1915,
when she’s reaching like this
there are few modern mega-
yachts which can sail with
her.
Her history and the way she
is handled today is an inspi-
ration to all modern sailors.
Practical Seamanship
.
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T
ABLE
OF
C
ONTENTS
Table of Contents
D
EDICATION
...................................................... 3
Boat Heel .........................................................48
Weather Helm ..................................................49
Steering Control ...............................................49
Keel Load ........................................................49
Wind Shear ......................................................49
I
NTRODUCTION
................................................ 13
Prioritize Your Time ........................................13
Defensive Seamanship .....................................13
Staying Current ................................................14
Crew Size .........................................................15
Check Lists ......................................................16
Stay In Touch ...................................................16
Register Your Book .........................................16
Visit Us On the Internet ...................................16
Priorities ..........................................................16
M
........................ 51
Up in the Lulls, Down in the Puffs ...................51
Tradewind Cycles ............................................52
Closer to Shore .................................................52
The Vang .........................................................52
P
ERFORMANCE
S
AIL
....................................................... 54
Headsails .........................................................54
Mainsail ...........................................................55
T
RIM
A
CKNOWLEDGEMENTS
.................................... 17
P
REPARATION
..........18
U
........................................... 56
Setting Up the Jib .............................................56
Sailing to Jib Telltales ......................................57
Mainsail Telltales ............................................58
Spinnaker Indicators ........................................60
T
ELLTALES
P
RE-
............................... 18
Access ..............................................................18
Steering Gear ...................................................18
Through-Hull Fittings ......................................19
Self-Steering ....................................................19
Propulsion Machinery ......................................20
The Rig ............................................................20
Sails .................................................................25
Chafe ................................................................26
Running Rigging ..............................................27
Deck Hardware ................................................29
Lifeline Systems ..............................................29
Safety Gear ......................................................29
Ground Tackle .................................................30
Checking for Leaks ..........................................31
Bilge Pumping .................................................32
Securing the Interior ........................................33
Electronics .......................................................33
D
EPARTURE
S
URVEY
C
............................. 60
Mainsail ...........................................................60
Headsails .........................................................61
S
AIL
S
HAPE
S
AILING
............................................. 62
Sail Selection ...................................................62
Headsail Trim While Beating ..........................63
Mainsail Control ..............................................63
Steering Technique ..........................................64
Steering Indicators ...........................................64
Working the Wind Shifts .................................65
Sailing to Target Boat Speed ............................65
Windvane Settings ...........................................66
Using the Autopilot ..........................................66
Coordinating With Sail Trim ...........................67
Helm Balance ..................................................67
Waiting Out the Weather .................................67
Avoiding Waves ..............................................68
U
PWIND
S
HAKEDOWN
....................................... 34
Mechanical Systems ........................................34
Loading the Engine ..........................................34
Maintenance Procedures ..................................35
Sail Trials .........................................................36
Rig Tune ..........................................................36
After a Couple of Days .....................................37
Electronics .......................................................37
Cockpit Drains .................................................37
Leaks (Again!) .................................................38
C
RUISE
T
......................................................... 72
Hydrodynamic Issues ......................................72
Working the Sheets ..........................................73
Tacking Techniques .........................................74
In Heavy Airs ...................................................74
In Big Seas .......................................................75
In Irons .............................................................75
C
LEARING
..................................... 39
Don’t Compromise Your Stability ...................39
Headsail Change ..............................................40
Don’t Procrastinate! .........................................41
THE
D
ECKS
R
....................................................... 76
Mainsail Trim ..................................................76
Headsail Selection ...........................................77
Reaching Headsail Trim ..................................77
Twin Headsail Reaching ..................................78
Steering Technique ..........................................78
H
OW
THE
P
ROS
D
O
I
T
..................................... 42
T
HOMAS
............................................... 42
Getting Ready to Head to Sea ..........................42
Safety First .......................................................43
Advice for Those Just Starting Out ..................43
P
ERRY
B
.................. 80
Sheeting to the Main Boom ..............................80
Single Headsail to Weather ..............................81
Twin Headsails Downwind ..............................83
Free-Flying Headsails ......................................84
Main Boom Sheeting Angle .............................84
Scandalizing the Mainsail ................................85
R
EACHING
AND
R
UNNING
B
OAT
H
ANDLING
..........44
S
HORTENING
THE
L
EARNING
C
URVE
.............. 44
S
PEED
.............................................................. 45
Current vs. Boat Speed .....................................46
Weather Avoidance .........................................46
Speed/Length Ratios ........................................46
S
TEERING
........................ 85
Design Issues ...................................................85
Steering Technique...........................................85
Impact of Sea State ..........................................86
Using Wind Shifts ............................................86
Setting Self-Steering ........................................86
AT
B
ROAD
A
NGLES
P
ERFORMANCE
............. 47
Cruising Displacement ....................................47
Sail Inventory ..................................................47
Underwater Condition .....................................47
-A
FFECTING
F
ACTORS
4
AINTAINING
SING
ONTROLLING
ACKING
EACHING
ROAD
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T
ABLE
OF
C
ONTENTS
Cross Chop Issues ........................................... 87
As the Wind Increases ..................................... 87
Prop Cavitation ............................................. 128
Running Rigging in the Prop ......................... 128
S AILING IN T IGHT Q UARTERS ....................... 129
Rig Configuration ......................................... 130
Cabo San Lucas ............................................. 131
Using Sails to Help Steer ............................... 132
Pre-Planning ................................................. 132
Anchors Ready .............................................. 132
Working in Close to Land ............................. 133
East London .................................................. 133
Setting the Hook ............................................ 135
Anchor Size ................................................... 135
Room to Leeward .......................................... 135
“Average” Boom Position ............................. 136
Sailing Bare Headed ...................................... 136
B ACKING D OWN UNDER S AIL ....................... 137
The Backstaysail ........................................... 137
Split Rigs ....................................................... 137
Steering in Reverse ....................................... 137
Using the Mainsail ........................................ 137
Backwards in New Zealand .......................... 138
Getting the Bow to Pay Off ........................... 139
S AILING O UT THE A NCHOR .......................... 140
Favored Tack ................................................ 140
Beating in Tight Quarters .............................. 141
When It Is Blowing ....................................... 141
Using Just the Jib ........................................... 141
K EN A RGENT ................................................ 142
Watch Standing ............................................. 142
Weather Routing ........................................... 142
First Sail of the Season .................................. 143
W ORKING ON D ECK ..........146
S AFETY AT S EA ............................................. 147
Use a Safety Harness ..................................... 147
Tethers .......................................................... 148
Connection Points ......................................... 148
Handholds ..................................................... 149
Working the Deck ......................................... 150
Don’t Stand in a Bight of Line ....................... 150
Shoes ............................................................. 151
Toerail ........................................................... 151
T HE F OREDECK ............................................. 152
Halyards ........................................................ 152
Mast Preparation ........................................... 153
Making up Halyards ...................................... 153
Sail Preparation ............................................. 153
Foredeck Netting ........................................... 154
Night Preparation .......................................... 154
Basic Safety Precautions ............................... 155
Handling Headsails ....................................... 155
Downwind Sail Changes ............................... 156
Changing Roller-Furled Jibs ......................... 157
Upwind Foredeck Work ................................ 158
Sail Overboard .............................................. 159
H ANDLING R UNNING R IGGING ..................... 160
Avoid Overload ............................................. 160
Effects of Rope Construction ........................ 160
Bitter Ends .................................................... 160
Coiling Lines ................................................. 161
Flaking .......................................................... 161
OWNWIND .......................................... 88
Extra Distance vs. Speed ................................. 88
Wind and Wave Factors .................................. 88
J IBING THE M AIN ............................................. 89
Reducing Jibing Loads .................................... 89
S PINNAKERS .................................................... 91
When to Use a Spinnaker ................................ 91
Setting the Spinnaker ...................................... 92
Spinnaker Trim ............................................... 93
Asymmetric Chutes ......................................... 96
Twin-Pole Jibing ............................................. 99
Single-Pole Jibe ............................................... 99
Hourglasses ................................................... 100
Headstay Wraps ............................................ 100
Spinnaker Takedown ..................................... 101
Emergency Release ....................................... 101
H ANDLING THE S PINNAKER P OLE ................. 102
Mast-Mounted Systems ................................. 102
Setting the Pole ............................................. 103
Dropping the Pole ......................................... 104
S AILING BY THE L EE ..................................... 105
P REVENTERS .................................................. 106
S URFING ........................................................ 108
Wave Mechanics ........................................... 109
Surfing and Hull Shape ................................. 109
Steering Control ............................................ 109
The Role of Displacement ............................. 109
Sail Area ........................................................ 111
Helming in Higher Performance Boats ......... 112
Helming Technique in Heavy Boats .............. 113
W HEN I T I S T IME TO R EEF ............................ 114
Reefing the Main ........................................... 114
Sail Slides or Bolt Rope? ............................... 116
Watch that Boom ........................................... 116
Sail Ties ......................................................... 116
Roller Reefing Jibs ........................................ 116
F ULLY B ATTENED M AINS ............................. 118
Hardware Considerations .............................. 118
Hoisting ......................................................... 118
Sailing with a Fully Battened Mainsail .......... 118
Dropping the Main ........................................ 119
B EING C OMFORTABLE AT S EA ...................... 120
Do Not Overpower ........................................ 120
Going to Windward ....................................... 121
Pinching Up ................................................... 122
Downwind Comfort ...................................... 122
Picking the Best Speed .................................. 122
Reducing Yaw Downwind ............................ 122
In a Leftover Sea ........................................... 123
Oversheeting to Reduce Rolling .................... 123
Picking a Comfortable Course ...................... 124
Light and Sloppy ........................................... 125
M OTORSAILING ............................................. 126
Range under Power ....................................... 126
Downwind Motorsailing ............................... 127
Upwind Motorsailing in Light Airs ............... 127
Upwind Motorsailing in Heavy Conditions ... 128
Special Considerations .................................. 128
IBING
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