Title:  The 50th Anniversary of Korea - Portugal Diplomatic Relations.
Stamp Serial#
Date of Issue
700,000 ea.
250 won ea. 
Turtle Ship,
Turtle Ship - Park, Eun-Kyun (Korea),
Nau - Telmo Gomes (Portugal),
Background- Atel. Acacio Santos/Helder Soares (Portugal) 
Image Area
40mm x 30mm 
Sheet Composition
4 x 3+ 2 
White unwatermarked 
Printing process
and colors
Photogravure, five colors 
Korea Minting and Security Printing Corporation 
The year 2011 marks the 50th anniversary of the establishment of diplomatic relations between Korea and Portugal. In celebration and commemoration of this 50th anniversary, Korea Post and its Portuguese counterpart, CTT are issuing, through collaborative works, a joint stamp featuring the old ships of the two countries: Korea's "Turtle Ship" and Portugal's "Nau." The backdrop of the sheet features the painting of Navy Maneuvering (housed in Jinju National Museum) from the latter part of the Joseon Dynasty.

Turtle Ship
As a pioneering warship of the Joseon Dynasty, the Turtle Ship was conceived in 1592 by Admiral Yi Sun-Shin who anticipated a Japanese invasion. The shape portrayed by Admiral Yi Sun-Shin himself is as follows: "Planks are laid on the upper deck of the ship, and on those planks, narrow cross-shaped ramps are placed to enable people to traverse, with blades lodged on the remainder of the ship's surface. The front section of the ship is shaped like the head of a dragon, while the rear section takes the shape of the tail of a turtle. There are gun ports fore and aft and also six gun ports port and starboard respectively. Yi Sun-Shin, Korea's venerated admiral, utilized the Turtle Ship as an assault ship and gained victory in 23 naval battles over 7 years under the spirit of "If you want to live through combat, you will certainly die. But if you are willing to die at combat, you will certainly live."

As the armed commercial vessel of Portugal in the 16th century, Nau was able to haul a heavy load, unlike previous vessels, and thus produce higher profits. It could be loaded with ample provisions, crew and passengers. It could also be mounted with more cannons designed to defend against pirate attacks. In general, Nau was equipped with 3 decks, 3 masts (2 square-shaped and 1 triangle-shaped) and a forecastle and an after castle. Its loading capacity ranged from 120 to 1,200 tons. At the time, Nau played a leading role on the maritime route between Lisbon, Portugal and Goa, India.