Seamanship Secrets: 185 Tips & Techniques for Better Navigation, Cruise Planning, and Boat Handling Under Power or Sail: 185 Tips & Techniques for ... and Boat Handling Under Power or Sail - Softcover

Jamieson, John

Softcover

ISBN 10: 0071605789 ISBN 13: 9780071605786

Verlag: International Marine/Ragged Mountain Press, 2009

Inhaltsangabe

"Secrets' is the modern Bowditch, written so clearly that navigation and seamanship will be comprehensible to anyone . . ." --Dave and Jaja Martin,circumnavigators and authors of Into the Light: A Family's Epic Journey "It's a great book. The prose is simple and clear . . ." --John Vigor, author of The Seaworthy Offshore Sailboat "The nautical tips and techniques presented are encyclopedic, yet the clear explanations demystify the topics . . ." --Don Launer, contributing editor for Good Old Boat magazine "It is a fine piece of work and should be read by anyone contemplating coastal cruising or blue water voyages. It definitely deserves a place in the offshore yacht's library . . ." --Ted Brewer, yacht designer, author, and offshore racing and cruising sailor Be a Better Skipper In the night, wind, rain, fog, big seas, strong currents, or congested waters, when there's no time for textbook seamanship solutions, what you need are shortcuts and techniques that work quickly and reliably every time. Distilled from the vast accumulated lore of seamanship and navigation, here are the absolute essentials--185 techniques that work without fail in the pilothouse or the exposed cockpit or flying bridge of a shorthanded sail- or powerboat. John Jamieson shows you how to: Set up a clipboard chart table for cockpit use Avoid hazards with danger bearings or a GPS grid highway Estimate current speeds with the 50-90-100 rule Track other boats in poor visibility using radar plots and bearing drift Sail home without a rudder or get your twin-screw boat home on one working engine Dock or anchor under any conditions And much, much more Even in this age of electronic navigation you need to know how to eyeball your boat through any situation. Each of the techniques in this cut-to-the-chase book has shown itself to be absolutely repeatable. It will work this time, the next time,and the time a er that, in conditions fair or foul.

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Über die Autorin bzw. den Autor

John Jamieson (Port St. Lucie, FL) spent 23 years in the Coast Guard as an enlisted navigator, instructor, search and rescue coxswain, and ship's conning officer. He has taught seamanship and navigation for the U.S. Coast Guard and Navy and has trained hundreds of students in these arts both ashore and afloat. As Senior Assistant Controller at the Rescue Coordination Center in Long Beach California, he coordinated air-and-sea search-and-rescue missions from the border of California and Oregon to the Yucatan Peninsula, out to 1,000 nautical miles offshore. Jamieson holds master and mate licenses for both power and sail and is a nationally certified sailing instructor. He recently directed the seamanship and chart navigation department at the internationally renowned Charles F. Chapman School of Seamanship in Stuart, Florida. He has sailed single-handed for 13 years and has delivered sailing vessels along the U.S. East Coast. This is his first book.

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SEAMANSHIP SECRETS

185 TIPS & TECHNIQUES for Better Navigation, Cruise Planning, and Boat Handling Under Power and SailBy JOHN JAMIESON

The McGraw-Hill Companies, Inc.

Copyright © 2009 John Jamieson
All right reserved.
ISBN: 978-0-07-160578-6

Contents

Chapter One

CHART AND PUBLICATION SECRETS

What mystery lies behind chart colors, water and seabed notations, or those dangerous- looking wreck and reef symbols sprinkled in our path? When searching for a buoy or marker at night or in the fog, what five things do you want to know before steering the direction your calculations point to? How do you gather all the latest information you need before leaving on that long-awaited cruise?

In This Chapter, You'll Learn How To:

* Solve the mystery behind chart colors, shapes, and symbols

* Instantly identify any buoy, beacon, or lighthouse

* Avoid dangerous shoals, reefs, and wrecks

* Make certain you are purchasing the newest editions of the charts you need

* Obtain the best cruising guides published in the United States for free!

A Navigator's Most Trusted Companion

Navigation begins with the ability to look at a two-dimensional nautical chart and imagine how the seascape would look in three dimensions. This skill gives you the confidence to plot a safe course, plan an enjoyable cruise, find a safe anchorage, take shelter in a storm or an emergency, and avoid dangers.

You'll find symbols and abbreviations for any chart in the world in a little booklet called Chart No. 1. It's a bit smaller than a medium-sized magazine, so adding it to your list of most valuable books aboard should be a cinch. Chart No. 1 is available by electronic download from the National Ocean Service at http://www.nauticalcharts.noaa.gov/. Follow these three easy steps:

1. Click on "View NOAA Charts" on the right side.

2. Find the "Nautical Charting Publications" section on the left side blue column.

3. Click on "U.S. Chart No. 1."

The U.S. government no longer provides printed versions, but these are available commercially through marinas or nautical bookstores. (Note from the publisher: Nigel Calder's How to Read a Nautical Chart contains the full contents of Chart No. 1.)

If you're using British Admiralty Charts, order Chart 5011, "Symbols and Abbreviations Used on Admiralty Charts," from the United Kingdom Hydrographic Office (Tel: + 44 (0)1823723366, e-mail: helpdesk@ukho.gov.uk, website: http://www.ukho.gov.uk/amd/standardNavigationalCharts.asp).

Chart No. 1 and Chart 5011 are not nautical charts, but they provide the keys to interpreting virtually every printed or electronic nautical chart you are likely to use. Let's check out the must-knows from these amazing dictionaries of nautical symbology. (Note: unless otherwise indicated, all symbols discussed apply to charts throughout the world.)

Chart Tints and Coloring

A darker shade of blue could mean danger for you.

—Anonymous Mariner

Cartographers use five color backgrounds on most nautical charts. Three of these represent above-tide and intertidal land masses and two represent water areas. (Some other colors are used on foreign charts, but for now, we will concentrate on U.S charts.)

Buff. Most land areas show a dull yellowish color. This buffcolored topography remains visible at all stages of the tide. Elevated regions, such as cliffs and mountains, offer excellent visual and radar targets for landfall and positioning.

Gold. This distinctive tint, which shows up as a darker hue of buff, indicates highly developed areas. If you need repairs, reprovisioning, or just a night on the town, lay your course for these areas.

Green. Look just inside, along, or just off any coastline. Green tinting indicates areas that cover or uncover with the tide, such as marshland, mudflats, sandbars, and oyster beds. At low tide such areas may or may not be visible; they may remain covered on a higher-than-normal neap low tide (the low tide at the time of the quarter moon, when low-water heights average higher than normal). At high tide, however, they're completely underwater. Give green-tinted areas a wide berth.

White. White is the primary background color for deeper water. The white areas on a chart indicate water deep enough for most small craft. Never assume, however. Always check out any area you plan to travel to and make sure it's safe.

Blue. Blue denotes shoal water. Depths decrease as the shade of blue darkens. Study the depth marked on the chart inside any blue-tinted area before deciding to pass that way. Also examine the curve that often encloses an area of blue water. Trace this solid curved line, called a contour line, and you'll find a depth, or sounding, printed in bold type in a break along the curve. The waters outside the curve will have low-water depths greater than that sounding. Dashed or dotted curves bounding blue water are less trustworthy and should be given a wide berth. Some charts show different tints of blue.

Flat Beach, High Cliffs, or Soaring Peaks?

In a blow, would you want to anchor off a flat beach or in the shelter of a hill or cliff? On the one hand, a steep cliff sometimes blocks an onshore breeze so effectively that you'll find no wind at all for some distance seaward of it. On the other hand, when you're sailing you should be aware that winds sometimes tumble down steep cliffs like snowballs down a mountain, creating gusty katabatic winds called williwaws near their bases. The wind velocity could double when funneled between two steep-sided islands or headlands. (In Chapter 11 you will learn which land features offer the best protection for anchoring.)

You will want to take advantage of or avoid such effects once you recognize their potential by examining your charts when planning a passage. These are the three most common land profile symbols.

Flat beach. Black, smooth lines wrapped around a land mass indicate flat beach areas. These lines represent the average high-tide mark. When the tide goes out, this line expands out toward the water. Study the chart and give beaches a wide berth to avoid rip currents and dangerous surf.

High cliffs. Teeth set just inside the land's edge—tiny black triangles that look like the serrations on a saw blade—indicate high cliffs. Cartographers refer to these symbols as hachures. High cliffs might provide shelter for anchoring, but vessels under sail should stay well clear; high winds or wind eddies may exist near their bases.

Mountain elevations and peaks. Many charts show mountains with elevations along their contours. In some atmospheric conditions, tall mountain peaks can be seen from far at sea. Note the 300-and 500-foot elevations on Angel Island in the illustration on page 3.

How to Interpret Water Depths and Seabed Characteristics

Nearing Nantucket, fog blanketed the square-rigger. The captain ordered the boatswain forward to begin casting the lead. Each cast solved three mysteries—water depth, nature of the sea bottom, and the distance off the ship-killing reefs ahead.

DEPTHS

Every tiny number located against a background of white or blue shows the water depth, or sounding, at an average low tide. On U.S. charts the usual low-water datum, or reference level, is mean lower low water, or MLLW, which is the long-term average of the lower of the two low tides...

Details zur Ausgabe

• Verlag: International Marine/Ragged Mountain Press
• Erscheinungsdatum: 2009
• Sprache: Englisch
• ISBN 10: 0071605789
• ISBN 13: 9780071605786
• Einband: Taschenbuch
• Anzahl der Seiten: 336
• Kontakt zum Hersteller: Nicht verfügbar
• Verantwortliche Person: gpsr@libri.de; gpsr@libri.de; ; Europaallee 1; Bad Hersfeld; 36244; Deutschland