11" YM753 Wooden Assembly Kit Geobukseon Geobuk Seon Korean Turtle Ship Turtleship Warship SAR Ship Iron Clad for Junior The Turtle ship, also known as 'Geobukseon' or 'Kobukson', was a type of large warship. Turtle ships participated in numerous victories against Japanese naval forces that supported Toyotomi Hideyoshi's attempts to conquer Korea from 1592-1598. This Wooden turtle ship kit required over 1-2 hours manufacture time for junior.