Coastal Navigation
Terms
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- Right of Way Mnemonic
- Generally Anchoring Our Red Tugboat Diligently Minimizes Surge Loads
- Red over Red
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This boat is dead.
vessel not under command - Red over Green
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Sailing machine.
Sailboat not under power - Red over White
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Fishing tonight.
fishing boat, not trolling - Green over White
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Trawling tonight.
Trawler - White over White
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Short Tug-tow in sight.
< 200m - White over White over White
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Long Tug, Tow in sight.
> 200M - Red over Red over Red
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Rudder Rubbing Rocks.
Vessel constrained by her draft - White over Red
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Pilot Ahead
Pilot boat ahead - Red over White over Red
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Red When Restricted.
Vessel Restricted in ability to manouver. -
Stern Light:
Yellow over White - My tow line is tight.
- Red Right Returning
- When proceeding upstream or into port, Red marks are kept on the right.
- Green Going Out
- When proceeding downstream or out of port, Red marks are kept on the right.
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Sound Signal:
One Blast Short * -
Away from Port
Turn to Starboard -
Sound Signal:
Two Blasts Short ** - Turn to Port
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Sound Signal
Three in Turn *** - Power Astern
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Sound Signal
Blast Quick Five ***** -
To Stay Alive
(Danger or confusion) -
Fog Signal:
Power boat underway - One long blast Q2min _
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Fog Signal:
Sailboat, Fishing, Towing, Restricted, Not Under Command - one long blast and two short blasts Q2min _**
- Convert from True to Compass
- Timid Virgins Make Dull Companions Add Whiskey
- Convert from Compass to True
- Can Dead Men Voate Twice At Elections
- Rule for Handbearing Compass
- Do not comopensate for Deviation
- Beam Bearings
- bearing to marks change more quickly as they approach the Beam. Take them last if possible.
- Bearings
- Bearings change as the boat moves. bearings on the beam change faster then off the bow or stern. Closer bearings change faster then distant ones
- Angles of Bearings
- 90 degrees is good, btw 60 - 120 degrees works well.
- Basic Fix
- first bearing on the slowest changing object - farthest ahead or astern, then the second, faster changing object, then do a check on the first (Average)
- Order of Bearings
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Take in order of Rate Of Change, slowest changing first.
Forward/Aft then Abeam/Near
Time averaged to the middle of the sequence. - Running Fix
- Observe and Plot a LOP. Travel a known Distance and take a second bearing. Advance or Retire the Course. Acurrate Course and Speed Over Ground are needed.
- Distance, Speed and Time Calculations
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60 x D = SxT
or
60 D ST gives you your address -
Colregs:
Collision Bearings - If you see a vessel on a constant bearing in relation to yourself, YOU ARE ON A COLLISION BEARING. Alter your Course and Speed to let the other vessel know what you are doing.
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Colregs:
Action to avoid collisiions - DO IT EARLY AND DO IT BIG
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Colregs:
Action by the Give-Way vessel - Take early and substantial action to keep well clear of the Stand-On vessel.
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Colregs:
Action by the Stand-On Vessel - Maintain course and speed, unless it becomes apparent that the Give-Way vessel is not taking appropriate action to avoid a colission.
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Lights:
Masthead or Steaming light - White, over the centerline, 225 degrees forward. Seen from ahead to 22.5 degrees abaft the beam.
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Colregs:
What are Dayshapes - vessels required to show specila light at night must show special signals during the day. They are black, cylinders, diamonds, balls or cones strung in the rigging.
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Colregs:
Sailboats on opposite tacks - Vessel on the PORT Tack is the Give-Way Vessel
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Colregs:
Sailboats on the same tack - Vessel to WINDWARD is the Give-Way Vessel
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Colregs:
Sailboat on a port tack that cannot determine the other vessels tack - You assume the roll of the Give-Way Vessel
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Colregs:
Sailboat vs Powerboat Exceptions: - Overtaking a powerboat. Can't navigate in a narrow channel. In a Traffic Lane. Not Under Command. Restricted Manuvering. Fishing or Trawling. Towing
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Colregs:
Define Overtaking - Comming up on a vessel from a direction more then 22.5 degrees abaft her beam. At night you would only be able to see the Stern Light, not the Sidelights
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Colregs:
Overtaking vs Crossing -
White light only = Overtaking
Sidelight Arc = Crossing
When in doubt, assume you are Overtaking and act accordingly -
Colregs:
Overtaking Right of Way - Any vessel Overtaking any other vessel shall keep out of the way of the vessel being Overtaken.
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Colregs:
Head-on situation - Vessels meeting Head-on MUST turn to Starboard.
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Colregs:
Crossing - Give-Way vessel should NOT ALTER COURSE TO PORT and cross behind the Stand-on Vessel
- Danger Zone
- Any vessel approaching you from the area covered by Your Starboard sidelight (dead ahead to 22.5* abaft your beam) is in your Danger Zone.
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Vessel Orientation at Night:
Red and Green Off your Beam - Either side, you are crossing in front of another vessel.
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Vessel Orientation at Night:
Red to your Portside or Green to Your Starboard - Vessel is going away from you.
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Vessel Orientation at Night:
Red off the Starboard Bow - Is a vessel crossing you (and in your Danger Zone) and is a Stand-On vessel. You must keep clear
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Conduct in Restricted Visibility
Two situations to avoid! -
1 An alteration to Port for a vessel forward of the Beam (except when overtaking)
2 An alteration toward a vessel Abeam or Abaft the Beam. -
Rules of the Road Mnemonic:
Nuclear Restrictions Constrain Fishing and Sailing, People Say. - Not under command - Restrained by manuverability - Consrtained by Draft - Fishing - Sailing - Power driven - Seaplanes
- When proceeding down a narrow channel, which side should you stay closer too?
- As close to as is safe and practical to the starboard side.
- What considerations should be taken when manuvering around Anchored or Grounded vessels, Wrecks, Dreges, Tows, Rowboats or Canoes?
- Your speed and the effects of Wake and Wash, Suction and Cavitation, and Bank Effect.
- What considerations should be taken when manuvering around Shorelines, Docks, Floats or Wetlands; other users of the waterways like Swimmers or Divers.
- Your speed and the effects of Wake and Wash, Suction and Cavitation, and Bank Effect.
- If a collision bearing remains constant, what should you do?
- Take action immediately by changing course enough to allow the other vessel to understand what you are doing.
- Lateral Bouy General Lights
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Red or Green
Flashing every 4 seconds (Fl)4s
or
Quick flashing (Q)1s - Lateral Bifurcation Bouy Lights
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Red or Green in the Dominant color
Fl(2+1)6s
or
Fl(2+1)10s - Central Channel or Fairway Bouy Lights
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White light
Morse Code A - Mo(A)6s
or
(LFl)10s - Isolated Danger Bouy Lights
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White light
Fl(2)5s
or
Fl(2)10s - What is the easiest way to remember the light system on Cardinal Bouys?
- White flashing lights that match up with a clock face Fl1s for North, Fl6 plus a long (to help count) for South, Fl3 for East and Fl9 for West.
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Special Purpose Bouys:
All Yellow
Solid White With Orange Markings
Solid White -
- Cautionary, Scientific, Large Vessel Anchorage.
- Information, control, Hazard, Keep Out or swimming.
- Swimming, Diving with a flag -
Special Purpose Bouys:
What color Light so they display and how often does it flash? -
Yellow lights
One Flash every 4 seconds
(Fl)4s
EXCEPT Scientific bouys5 Flashed every 20 seconds fl(5)20s -
Special Purpose Bouys:
All Yellow - - Cautionary, Scientific, Large Vessel Anchorage.
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Special Purpose Bouys:
Solid White With Orange Markings - - Information, control, Hazard, Keep Out or Swimming.
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Special Purpose Bouys:
Solid White - - Swimming, Diving with a flag on top.
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Special Purpose Bouys:
What is special about Scientific bouys? -
They have a different light pattern, Yellow,
5 Flashes every 20 seconds
Fl(5)20S -
Special Purpose Bouys:
What color are Information, Control, Hazard, Keep Out or Mooring Bouys? - White with Orange markings.
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Special Purpose Bouys:
What shapes do Information, Control, Hazard, Keep Out Bouys display? -
Square = Notice
Circle = Control
Diamond = Hazard
Diamond with Cross = Keep Out -
Special Purpose Bouys:
What color do Mooring Bouys display? - Orange over White
- Name the Points and Inter-Cardinal Points of the Compass and give their direction in degrees
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North = 000 or 360 Degrees
North East = 045 Degrees
East = 090 Degrees
South East = 135 Degrees
South = 180 Degrees
South West = 225 Degrees
West = 270 Degrees
north West = 315 Degrees - What precautions should you take when using a Lead Line or a Transit to steer your course?
- Diligently and Aggressivly correct your course back to the correct BEARING - don't trust line of sight off the bow "Dead Ahead". Compensate for Current!
- Five Steps to Lay Off A Course from a Fix.
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1-Draw a line from your Fix to where you want to go.
2- Center hole of protractor over Fix.
3- Square protractor to North on the Chart.
4- Square the protractor and Grid Lines.
5- Read the course in True at the edge of the protractor. - Red over Red
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This boat is dead.
vessel not under command