This site explains latitude and longitude, the use of beacons, the evolution of mapmaking, and sailing history and science. Ocean weather and currents are also presented (Pat Seed, USA 2010).

You can view either a map of the Earth showing the day and night regions at this moment, or view the Earth from the Sun, the Moon, the night side of the Earth, above any location on the planet specified by latitude, longitude and altitude, from a satellite in Earth orbit, or above various cities around the globe. [in english as you may have guessed ;-)]

Contents: Physical landscape, rivers, climate, vegetation, fishing, mining, manufacturing and many more. ʺIreland is an island on the western fringe of Europe between latitude 51 1/2 and 55 1/2 degrees north, and longitude 5 1/2 to 10 1/2 degrees west. Its greatest length, from Malin Head in the north to Mizen Head in the south, is 486 km and its greatest width from east to ...