1 / 16

Measuring Direction

Measuring Direction. Direction is measured from 000  to 360 clockwise from North. South = 180  West = 270 . North - 000 /360 East = 090 . LATITUDE. Longitude. Measuring Latitude and Longitude. One minute of latitude equals one nautical mile. HOW CHART SCALES DIFFER.

clile
Télécharger la présentation

Measuring Direction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Measuring Direction Direction is measured from 000 to 360 clockwise from North South = 180 West = 270  North - 000/360 East = 090 B 97 05-02

  2. LATITUDE B 97 05-04

  3. Longitude B 97 05-05

  4. Measuring Latitude and Longitude One minute of latitude equals one nautical mile B 97 05-06

  5. HOW CHART SCALESDIFFER B 97 05-07-1

  6. CHART SCALES Small Scale chart Large Scale Chart Small scale charts show large areas Large scale charts show small areas B 97 05-08

  7. CHART SCALES B 97 05-07-2

  8. “MARK”AN AID TO NAVIGATION YOU SEE WHILE BOATING TWO CATEGORIES OF MARKS • Lateral Marks • Marks starboard and port sides of a route • Non-Lateral Marks • Supplemental aids having no lateral significance BS 98 03-01 - B 97 06-01

  9. IDENTIFICATION OF “MARKS” • In Daylight • Shapes • Colors • Numbers or letters • Sounds • At Night • Light color and patterns • Sounds Always Locate Marks On Your Chart BS 98 03-02 - B 97 06-02

  10. TYPES OF “MARKS” • BUOYS • Floating marks anchored at specific locations • BEACONS • Fixed marks permanently fastened to the earth’s surface BS 98 03-03-1 - B 97 06-03

  11. “BUOYS” • Floating Aids • Various shapes and colors • Position approximate • Identified by • Number, letters, sound devices and lights • Chart symbol • diamond with a small position circle • Magenta disc around position circle, if lighted BS 98 03-03-2 - B 97 06-04

  12. “BEACONS” • Permanently fixed to Earth's surface • Examples: • Lighthouses • Daybeacons • Identified by: • Numbers, letters, sound devices, lights • Chart symbols: • Unlighted - small triangle or square • Lighted - magenta flare  with a black position dot BS 98 03-03-3 - B 97 06-05

  13. The “3-R” Rule Red - Right - Returning • When Returning from sea, keep red side-of-channel marks to your starboard • “Returning” is: • Entering a harbor or bay from the open ocean • Traveling up a river from the sea • Traveling clockwise around the U.S. along it’s coastline • South along the Atlantic coast • West along the Gulf coast • North along the Pacific coast BS 98 03-05 - B 97 06-06

  14. TYPES OFSOUND SIGNALS BS 98 03-11 - B 97 06-08

  15. Definitions • Navigation • The science of directing the movements of a boat from one place to another in a safe and efficient manner. • Piloting • A part of navigation using landmarks, navigational aids, and soundings as primary tools. B 97 07-01

  16. A Chart Compass Rose Variation is found in the center of the compass rose B 97 07-03

More Related