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Pichavaram is one of the villages of Parangipettai near Chidambaram in Cuddalore District, Tamil Nadu, India. [ 1 ] [ 2 ] It is located between the Vellar estuary in the north and Coleroon estuary in the south.
Pichavaram Mangroves (Tamil Nadu): Situated near the town of Chidambaram, the Pichavaram mangroves are one of the few large mangrove forests in Tamil Nadu. This forest features a unique network of channels and islands, attracting tourists for boat rides and birdwatching.
OpenSeaMap is a software project collecting freely usable nautical information and geospatial data to create a worldwide nautical chart. This chart is available on the OpenSeaMap website, and can also be downloaded for use as an electronic chart for offline applications. [1] The project is part of OpenStreetMap. OpenSeaMap is part of the ...
The oldest sailing directions, dating back to the middle ages, descended directly from the Greek and Roman periplii: in classical times, in the absence of real nautical charts, navigation was carried out using books that described the coast, not necessarily intended for navigation, but more often consisting of reports of previous voyages, or celebrations of the deeds of leaders or rulers.
The Ramsar Site Information Sheet notes that "at a time when wetlands in northern India are getting reduced due to extensive drainage and reclamation, the avian habitats formed by the creation of the Pong Dam assume a great significance" - given the site's location on the trans-Himalayan flyway, more than 220 bird species have been identified ...
Time on a ship's clocks and in a ship's log had to be stated along with a "zone description", which was the number of hours to be added to zone time to obtain GMT, hence zero in the Greenwich time zone, with negative numbers from −1 to −12 for time zones to the east and positive numbers from +1 to +12 to the west (hours, minutes, and ...
A chart datum is the water level surface serving as origin of depths displayed on a nautical chart and for reporting and predicting tide heights. A chart datum is generally derived from some tidal phase, in which case it is also known as a tidal datum. [1] Common chart datums are lowest astronomical tide (LAT) [1] and mean lower low water (MLLW).
With the discovery of the sea route to India in 1498, Vasco da Gama landed at St Mary's Islands, at the end of the voyage from the Kingdom of Portugal.Da Gama fixed a cross and named one of these islands O Padrão de Santa Maria in Portuguese, as a dedication to St Mary, the virgin-mother of Jesus Christ, before proceeding to Calicut (Kozhikode) in the Malabar region, the present-day Kerala.