Transcript Coastal Navigation using GPS

Session 2
NAUTICAL
ALMANACS
Objectives
To become familiar with:
1. Nautical Catalog Number 1.
2. Dates and Latest Editions.
3. Light List.
4. Coast Pilot.
5. LNM—Local Notice to Mariners.
6. Tide Tables.
7. Tidal Current Tables.
8. Tidal Current Charts.
9. Nautical Chart No. 1.
Introduction to
NAUTICAL ALMANACS

There are various catalogs and almanacs
published by the Coast Guard, other
Federal agencies, and the private sector
which provide information important to
the small boater.

Each publication fills a distinct purpose.
1. Nautical Chart Catalog 1
- Purpose

Provides the answer to the question,
“What nautical charts should I use in
this area?”

You will find a copy of this document
in every good chart dealer’s store.

A sample document is being passed
around for review.
Nautical
Chart
Catalog
No. 1
2. Dates of Latest Editions
Nautical Charts & Misc. Maps

Published quarterly.
Available
on
the
internet:
 Shows you the Edition Number and Date for
each nautical chart.
 Insures that you are buying the most up-tohttp:chartmaker.NCD.NOAA.GOV
date chart.

Sample document is being passed around
for review.
Dates of Latest Editions
Nautical Charts & Misc. Maps

This publication lists each chart by:
– Chart Number,
– Chart Scale,
– Price,
– Edition Number,
– Edition Date, and
– Printing Revision Date.
3. LIGHT LIST
Purpose
Available
on the
internet
:
 Provides
more
and complete
data about
each Aid to Navigation – lighted and
unlighted.
www.NAVCEN.USCG.GOV/pubs/lightlist/

Shows data that cannot be printed on a
nautical chart.

Two Major Sections:
–
–
Offshore Buoys—found in front of Light List.
Coastal Buoys
LIGHT LIST - Purpose


To provide mariners with more complete details about
Aids to Navigation—ATONs.
A catalog of:
– All Aids to Navigation—ATONs.
– Lights.
– Sound Signals.
– Color.
– Type
– Radio Beacons and signals.
– Structure.
– Latitude and longitude – good for use as waypoints
in your GPS.
– Ownership – private or federal.
LIGHT LIST Publications

Printed in Seven Volumes:
 ME
–
–
–
–
–
–
to NJ
NJ to SC
SC to FL
FL to TX
Mississippi River System
Pacific Coast
Great Lakes
LIGHT LIST - Typical Page

Light List Number
–
–

ATONs Name
–
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

Each ATON is assigned a specific number.
Number is changed periodically.
Each ATON has a unique name which includes the
name of the body of water in which the aid is
located.
Geographic Position – LAT/LON
Light characteristic
Height above water
Height above water explained
– Floating Aid – The height is measured
from the water line to the level of the light
bulb—focal plane.
– Fixed Aid – The height is measured
from Mean High Water (MHW) level to the
height of the light bulb—focal plane.
LIGHT LIST - Typical Page
 Nominal
–
–
Range of Light
Maximum distance at which a light can be
seen in clear weather.
Distance is expressed in nautical miles.
 Structural
–
Characteristics
Special construction features or material
is indicated.
Light List
California
Structure
Remarks
Location
Height
Range
Name
Year
No.
Seacoast
LIGHT LIST - Typical Page
 General
–
–
–
–
–
–
Remarks
Data on signal characteristics.
Light sectors—arcs of visibility.
RADAR reflectors.
Emergency back-up lights.
Seasonal ATON deployment.
Data about Private Aids.
Pt. Loma Light
Height Above Water = 88 ft.
from the Light List
Pt. Loma Light
Nominal Range = 23 n m
from the Light List
Luminous Range
Luminous Range - nautical miles
15 n m
Meteorological
Visibility
5nm
Nominal Range
23 n m
Nominal Range - nautical miles
Visible Distance to the Horizon
Observer’s Height of
Eye = 16 feet
D = 1.17
H
Visible Distance = 5 n m
You may see a minor light
or buoy at half again
its nominal range.
Visible Distance to the Horizon
Lighthouse Height
Above Water = 88 feet
D = 1.17
H
Visible Distance = 11 n m
Be sure to maintain
your night vision
at all times.
COAST PILOT
Purpose
Available on the internet:
 Supplements information shown on
Nautical Charts.
http://CHARTMAKER.NCD.NOAA.GOV/NSD/
COASTPILOT.htm
 Shows data that can’t be coded or
abbreviated on a Nautical Chart.

A sample document is being passed around
for your review.
COAST PILOT
Updates

Received from:
–
–
–
–
–
–
NOAA Field Inspections.
LNM Information.
Hydrographic Vessels.
Other Government Agencies.
State and local Governments.
Maritime and Pilotage Associations.
Port Authorities.
YOU!
COAST PILOT
Published in 9 Volumes
ME to Cape Cod.
 Cape Code to Sandy Hook.







Sandy Hook to Cape Henry.
Cape Henry to Key West.
Gulf of Mexico, PR, Virgin Islands.
Great Lakes.
West Coast, Hawaii.
Alaska (2 volumes).
COAST PILOT - Contains





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
Channel descriptions.
Anchorages.
Bridge and cable clearances.
Currents.
Tide and water levels.
Prominent features.
Pilotage
COAST PILOT
Six Major Sections
1.
2.
3.
4.
5.
6.
General Information.
Navigational Regulations.
General information about the area.
Specific information about the area.
Appendix.
Tables.
COAST PILOT
Contains more information:








Towage.
Weather.
Ice conditions.
Dangers.
Routes.
Traffic Separation Schemes.
Federal Regulations for area.
Locks and Dam regulations and signals.
COAST PILOT
Tables





Climatological Tables.
Meteorological Tables.
Mean surface water temperature and
densities.
National Weather Service coastal warning
displays.
Nautical miles between points.
COAST PILOT
More Tables






Radio bearing conversion table.
Distance of visibility of objects at sea.
Conversion table—degrees to points and
vice versa.
Conversion tables.
Table for estimating time of transit.
Index
COAST PILOT
Corrections

Corrections are published in the Local
Notice to Mariners—LNM.
LNM
Local Notice to Mariners
Available on the internet:
 Issued weekly, at no cost to the user, by the
United States Coast Guard.
http://www.NAVCEN.USCG.mill
LNM Sections
Special Notices.
II Discrepancies.
III Temporary changes - Temporary changes
corrected.
IV Chart corrections.
V Advance Notices
VI Proposed changes to ATONs.
VII General
VIII Light List corrections.
Marine Events.
Coast Pilot Updates.
I
http://www.navcen.uscg.gov/lnm/default.htm
36
7/18/2015
Broadcast Notice to
Mariners
United States Coast
Guard
On VHF-FM Channel
22A
TIDE TABLES
Purpose

To provide a means of predicting the height
of tide for each day of the year.

Provide other astronomical date and tables
to the mariner.
TIDE TABLES - Contents


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
Table 1 – Daily Tide Predictions.
Table 2 – Tidal Differences and other constants.
Table 3 – Height of Tide at any time.
Table 4 – Local Mean Time of Sunrise and
Sunset.
Table 5 – Reduction of Local Mean Time to
Standard Time.
TIDE TABLES - Contents

Table 6 – Moonrise and Moonset
Table 7 – Conversion of feet to meters.
Table 8 – Tide Prediction Accuracy
Glossary of Terms
Index to Stations
Astronomical data
Much of this
information and
data is available
on new GPS sets.
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TIDAL CURRENT TABLES
Purpose

To provide a means to predict the set and
drift of the current for every day of the year.

To provide additional tables to help the
mariner convert current set and drift.
TIDAL CURRENT TABLES
Contents

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Table 1 – Daily Current Predictions.
Table 2 – Current Differences and other
Constants and Rotary Tidal Currents.
Table 3 – Speed of Current at any Time.
Table 4 – Duration of Slack.
Table 5 – Rotary Tidal Currents.
The Gulf Stream
TIDAL CURRENT TABLES
Contents

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Wind-driven currents.
The Combination of Currents.
Current Diagrams.
Publications relating to Tide and Tidal
Currents.
Glossary of Terms.
Index to Stations.
CHART No 1 – Nautical Chart
Symbols Abbreviations and Terms
 Contains
every abbreviation and
symbol used of a Nautical Chart.
A
must for every serious
navigator.
ANY QUESTIONS?
How do
you know
when a
The
Local
Notice
nautical chart or a
to almanac
Mariners!
LNM
is changed?
Colregs Demarcation Lines
Any questions on:
AV Task 1-1 Use of Chart No. 1 – see page
116.
AV Task 1-2 Basic parts, symbols and
abbreviations found on a nautical chart –
see page 116.
AV Task 1-4 Knowledge of the Coast Pilot –
see page 117.
Complete Task 3-1
Demonstrate the use of the Light List.
Identify three private aids.
You have five minutes.
See pages 123 and 124 of the “D1 (P)ATON
Study Guide.”