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In a wider sense the phrase "sea mark" is often understood to include all types of landmarks, structures and devices that can be used to provide warning and guiding signs to mariners. Thus a sea mark can be and often is located on dry land. Examples of land-based sea marks are various signal lights
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mnemonic, which also helps with buoy numbering is "Even Red Left Port" (as in Eric the Red) - Even
Numbered buoys are red, on your left (port) side leaving port. In any case, since in many harbours it is not always apparent which direction is seaward, buoys should be used in connection with the
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and leading marks. The latter are mainly used to indicate the centerline of a fairway in narrow passages. Sea marks may also on occasion be used to help mark the boundaries of defensive
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harbour and passing between the sea mark buoys of the entrance, while an approaching trawler in the background sails around the red buoy
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The two regions differ principally in the colours used to denote the two sides of a channel. When approaching a harbour from seaward,
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of buoys depending on their purpose, the IALA Maritime
Buoyage System. For historical reasons, there are two regions of
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these are replaced with conical red marks to starboard and cylindrical green ones to port. This can be remembered (for
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Sea marks are used to indicate channels, dangerous rocks or
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fixed to the seabed or on shore, towers (sometimes rock
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409:Isolated danger mark
404:Emergency wreck buoy
247:"Red, right, return"
150:light characteristic
97:to navigate safely.
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534:the original
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513:. Retrieved
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1008:WikiProject
821:Maintenance
782:Dalén light
777:Carcel lamp
762:Argand lamp
617:Lighthouses
466:Lightvessel
354:Triangular
242:) with the
206:South Korea
202:Philippines
164:Definitions
1023:Categories
998:Wiktionary
898:Categories
864:Antarctica
833:Light dues
802:Lewis lamp
757:Aerobeacon
686:Screw-pile
515:2021-03-08
477:References
461:Lighthouse
393:Mark types
260:navigation
249:. Another
121:shipwrecks
69:navigation
40:Concarneau
34:The Ketch
852:Locations
228:starboard
131:fog bells
95:seaplanes
978:Category
750:Fixtures
723:Sea mark
698:(acting)
676:Integral
579:sea mark
456:Landmark
372:See also
337:Hurghada
251:Region B
244:mnemonic
240:Region B
236:Region B
224:Region A
216:Region A
198:Americas
194:Region B
188:in use:
135:foghorns
126:daymarks
83:maritime
79:pilotage
60:sea mark
988:Commons
884:Oceania
828:Keepers
787:Foghorn
713:Daymark
666:Caisson
638:Museums
451:Daymark
358:in the
356:daymark
196:in the
178:colours
102:beacons
64:seamark
62:, also
929:Global
874:Europe
859:Africa
843:Tender
812:VRB-25
696:Vessel
661:Aerial
366:2021.
360:marina
200:, the
174:shapes
117:shoals
106:cairns
93:, and
36:Popoff
647:Types
471:Racon
435:Other
364:Ystad
341:Egypt
234:. In
214:IALA
210:Japan
192:IALA
110:buoys
91:ships
87:boats
869:Asia
681:Pile
671:Crib
446:Buoy
441:ATON
281:buoy
279:Red
232:port
208:and
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168:The
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66:and
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283:in
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