ผู้เขียน: Japan) Kobayashi Hiroaki (Tokyo University of Marine Science and Technology

Hiroaki Kobayashi has trained 1500 mariners in ship handling over twenty years and he has systematized the methods of safe navigation into nine elemental techniques. Taking a rigorous and scientific …

Hiroaki Kobayashi has trained 1500 mariners in ship handling over twenty years and he has systematized the methods of safe navigation into nine elemental techniques. Taking a rigorous and scientific …