19th century, sea of Japan in articles, just collections of memo.

1858.The North Pacific Surveying and Exploring
Expedition or my last cruising A.W.Habersham 1826-83 Lieut. u.s. Navy
http://www.archive.org/details/northpacificsur00habegoog
Sea of Japan: Japan Sea

P164.
The Vincennes was to proceed, via the Bonin Islands, to Loo-choo, the Cooper to take in some islands to the northward and eastward of Formosa on her way to the same port, and the Hancock to serch for the Porpoise in the Formosa Channel, to survey the southwest and east coast of that island, and then join the other two vessels at the port of destination. From thence we were to proceed by different routes to the port of Hakodadi, island of Jesso, - the Cooper going through the Japan Sea, and the Vincennes and Hancock through a long chain of the islands, touching at Simoda, island of Nipon, and finally joining the Cooper at Hakodadi.


1875.The navigation of the Pacific Ocean, China Sea, &c.
translated at United States Hydrographic Office.
from the french of Mons.F. Labrosse
by J.W. Miller lieutenant US navy
http://www.archive.org/details/navigationofpaci00labrrich
Sea of Japan:Sea of Japan.
Strait of Kora: Channel of Corea/Strait of Korea

PDF P57-59.
SS36.The CURRENTS OF THE JAPAN SEA-It has been seen , s19,that information is not yet complete concerning the system of winds prevalent in the Japan sea, which lies btween the coast of Tartary and the island of Japan. This remark is equally true of the currents. The only thing which can be positively asserted is that both winds and currents in this sea are vaiable, and that it is necessary for navigators to be extremely careful while passing from Corea channel to Tsugar strait.

"I am inclined to believe that a current from the Arctic ocean exists, runnung counter to the Kuro-Siwo, and which passes to the westward through the strait of Tsugar, down through the Japan sea, between Corea and the Japanese islands, and form the hyperborean current on the east coast of China, which is known to flow to the southward, through the Formosa channel into the China sea.~~~~in a proof of which we cite the following passage from the instructions of Captain Legras:
"The speed of the current is at times vely slow; at others, very considerable.It is only known that abranch of the Kuro-Siwo is directed usually (although with numerous variations in its strength, direction, and breadth, and gratly influenced by the wind,) toward the NE.,after leaving the strait of Corea, and enters into the Pacific by Tsugar Strait.


1878.A directory for the navigation of the Indian Archipelago, China, and Japan, from the straits of Malacca and Sunda, and the passages east of Java.
http://www.archive.org/details/directoryfornavi00find

Attached Maps :MAGNETIC VERIATION AND OLD 1879 PASSAGES
Brougton bay: Broughton bay
Strait of Korea:Strait of Korea
Sea of Japan:Sea of Japan
East China Sea: Tung Hai or Eastern Sea


1898.An American cruiser in the East
http://www.archive.org/details/americancruiseri00ford
Sea of Japan: Sea of Japan:
Strait of Korea:Korean Channel.

Korea, Choson (Land of the Morning Calm) called korea by the Portuguese, who were the first navigators known in the far East, and still called Korea, or Corea, by foreigners, is a peninsula situated on the north eaestern side of Asia extending southwestward between China and Japan. It is about sid hundred miles long, and lies between the 34th and 43d degree of north latitude. The Sea of Japan is on its eastern side, Manchuria lies to the north, the Yellow Sea is on the westward, and the Korean Channel marks its southern limit. It has a coast-line of about seventeen hundred miles.



Hey, Korean! Did you still claims with wrong Korean governmental brainwashed propaganda at school that Sea of Japan is originated from Japanese annexation of Korea ??? how you are idiot!!!