October 20, 2017 marinelegends 3

In navigation set and drift are characteristics of the current or the velocity of water over the ground in which a ship is sailing. Drift is the magnitude, or […]

Luminous Range

October 20, 2017 marinelegends 1

Brief about geographical & luminous range:  If the light can’t penetrate the haze/fog, it can’t reach you no matter what your geographic range. Normally, ALL gives […]