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An Electronic Navigational Chart (ENC) is a digital representation of a real-world geographical area for the purpose of Marine navigation.Real-world objects and areas of navigational significance, or to a lesser degree - informational significance, are portrayed through Raster facsimiles of traditional paper charts; or more commonly through vector images, which are able to scale their relative ...
This resolution amends Chapter V of the International Convention for the Safety of Life at Sea (SOLAS), regulation 19-1 and binds all governments which have contracted to the IMO. [2] The LRIT regulation will apply to the following ship types engaged on international voyages: All passenger ships including high-speed craft,
When a racon receives a radar pulse, it responds with a signal on the same frequency which puts an image on the radar display. This takes the form of a short line of dots and dashes forming a Morse character radiating away from the location of the beacon on the normal plan position indicator radar display. The length of the line usually ...
A plan position indicator (PPI) is a type of radar display that represents the radar antenna in the center of the display, with the distance from it and height above ground drawn as concentric circles. As the radar antenna rotates, a radial trace on the PPI sweeps in unison with it about the center point. It is the most common type of radar ...
The protective capsule of a voyage data recorder on M/V Barfleur This image shows the AMI Marine ltd Float Free Capsule used on ships to store a minimum of 48 hours of recorded data. if the vessel sinks the capsule case (white) will open and release the Yellow capsule from inside, this capsule will then float to the surface and emit a distress signal to alert shore side authorities.
IMO requirements under the SOLAS resulting from an amendment of June 5, 2009, [5] [6] [7] come into force on the following dates for ships classified by size: July 2011: new vessels in excess of 150 tonnes. July 2011: all passenger vessels July 2012: all vessels in excess of 3,000 tonnes July 2013: all vessels between 500 and 3,000 tonnes
A typical shipboard ARPA/radar system. A marine radar with automatic radar plotting aid (ARPA) capability can create tracks using radar contacts. [1] [2] The system can calculate the tracked object's course, speed and closest point of approach [3] (CPA), thereby knowing if there is a danger of collision with the other ship or landmass.
Consider the following example : if the radar antenna is located at around 15 m above sea level, then the distance to the horizon is pretty close, (perhaps 15 km). Ground targets further than this range cannot be detected, so the PRF can be quite high; a radar with a PRF of 7.5 kHz will return ambiguous echoes from targets at about 20 km, or ...