Geographic gazetter, Pilot guide, Hydrographic magazine ,and admirary chart and Sea of Japan, Strait of Corea, and Brougthon bay.


It is confirmed that the hydrographic place of name around Sea of Japan, e.g. Sea of Japan, Strait of Corea, and Broughton Bay, had been  established during the Ages of european discovery expedition around the Sea of Japan area. Those recognization of hydrographic name is succeed to admirary chart and hydrographic magazines and gazetters. On 1840's the name of Sea of Corea already extinct from the world map or charts, instead of uprising Strait of Corea and Broughton Bay.

1815.Maritime geography and statistics Tuckey, James Hingston, 1776-1816
http://www.archive.org/details/maritimegeograp00tuckgoog
AARDRUHJSKUNDE Voor P2

Hat duagenoemde Chinessche Tartarieye wondt voons, neer den volksstam, aan welken hetaelve en china tevens toebehooren, bet land der Manchous gebeerten. Het poult ??? de Gele zee, be-zpomt er de Golf van Leotong ,aan de Japansche zee tot aan de rivier Amur.


1851.(FR)Carte Generale de LOcean Pacifique (Chartf)
by Service Hydrographigue et Oceanographigue de la Marine
East of Chosun(Korean)Peninsula: Corean Goulf.
Between Busan and Tsushima islet: Detroit de Coree
Between Japan's Honsyu and Tartary :Mer Du Japon.


1851.A directory for the navigation of the Pacific Ocean; with description of its coasts, islands, etc., from the Strait of Magalhaens to the Arctic Sea, and those of Asia and Australia; its winds, currents, and other phenomena ..  by Findlay, Alexander George, 1812-1875  Fellow the Royal geography society.

Attached map; Sea of Japan
http://www.archive.org/stream/adirectoryforna02findgoog#page/n8/mode/2up

Texts
http://www.archive.org/stream/adirectoryforna02findgoog#page/n669/mode/1up/search/japan
The only river falling into this vast basin in the Amour, iif indeed the Amour can fairly be said to do so, terminationg as it does in a bay, which, being bounded in front by the Island or Peninsula of Saghalin, opens by one strait into the Sea of Okhotuk, and perhas by anther into the Sea of Japan.

Strait of Corea
http://www.archive.org/stream/adirectoryforna02findgoog#page/n697/mode/1up/search/Corea

(about Dagelet island)
Tides, Magnetic variations &c
http://www.archive.org/stream/adirectoryforna02findgoog#page/n54/mode/1up
Island of Nippopn:
N.E. cape
.....
.....
Dagelet island (Matsu sima) 37 25 130 56 La Perouse
Argonaut island (Take sima) 37 52 129 50  〃


1855 Imperial Gazetteer Volume One (quote from:Pacisist @dokdo or takeshima)
" A General Dictionary of Geography, Physical, Political, Statistical and Descriptive." (2-volume book) which was published by Blackie & Son (Glasgow and London, UK).
COREA, or KOREA [called by the natives
Tsjo-sien, by the Chinese, to whom it is tributary, Kao-li, and by the Japanese Ko-rai, whence its European name of Corea, or Korea], is an extensive country in N.E. Asia, whose limits are not accurately known, bounded, N. by Manchooria, from which it is separated by the Amba Chayan Alin mountains; N.W. by the Chinese prov. Leao-tong, from which it is separated by a wooden stockade, now in ruins, and connected with the great wall of China; E. by the Sea of Japan, S. by the strait of Corea, and W. by the Whanghai, or Yellow Sea, and the Gulf of Leao-tong. The cap., King-hi-tao, is situate on the Kiang river, in the centre of the kingdom, lat. 37° 40' N.; and long. 127° 20' E. Corea comprises a peninsula with a small portion of the continent to which it is attached - the continent portion extending in breadth from lon. 124° to 132° E., the peninsula from lon. 125° 15' to 131° 30' E., its average width being about 135m., while the total length of the country, from N. to S., is somewhat less than 600m., between lat. 33° 20' and 43° N. Corea also includes numerous groups of islands in the Yellow Sea and
strait of Corea, and the island of Quelpaert, 50m. S. the peninsula. Area of continental portion, about 80,000
sq.m.



1855 Pronouncing Gazetteer, USA( Quote from Pacifist @dokdo or takeshima)
COREA, or KOREA, ko-ree’ a, (called by the natives Tsyosien, by the Chinese, to whom it is tributary, Kao-lee, and by the Japanese, Ko-rai, ko’ri’, whence its European name of Corea, or Korea,) is an extensive peninsular country in North-eastern Asia, whose limits are not accurately known, bounded E. by the Sea of Japan, S. by the Strait of Corea, and W. by the Whanghai, or Yellow Sea, and the Gulf of Leao-tong. The capital, Kingkitao, is situated on the Kiang River, in the centre of the kingdom, lat. 37°40’N., and lon. 127°20’E. Corea comprises a peninsula with a small portion of the continent to which it is attached; the continental portion extending in breadth from lon. 124°to 132°E., the peninsula from lon. 125°15’ to 131°30’ E., between lat. 33°20’ and 43°N., its average width being about 135 miles, while the total length of the country, from N. to S., is somewhat less than 600 miles. Corea also includes numerous groups of islands in the Yellow Sea and Strait of Corea, and the island of Quelpart, 50 miles S. of the peninsula. Area of continental portion, about 80,000 square miles.


1855.(U.S) Navy Chart of the Coast of  China 、Pacific coast (Asia), Japan islands
Copied to ordered by Commandar Mattew Perry.

http://seaofjapan-noeastsea.blogspot.jp/2012/01/1856narrative-of-expedition-of-american.html
http://blog.daum.net/sabul358/14309068
East of Chosun(Korean)Peninsula: Broughton Bay.
Between Busan and Tsushima islet: Korea Strait  (Broughton channel , Krusenstern channel)
Between Japan's Honsyu and Tartary :Sea of Japan.
Map explanation text: Sea of Japan

(1856).Expedidion to Japan (Commandaer Mattew Perry) attached map;

http://sea.ap.teacup.com/seiasouan/6.html
Quote;井蛙草庵(せいあ そうあん) 第一巻 2006/6/1 「第5話 古地図(3) 日本列島」  古地図


http://saltyfriendstsushin.seesaa.net/article/109374494.html
Salty Freinds通通信:2008年11月10日 ■□ 船長の見たペリー艦隊 ☆最終回☆ By大河原明徳さん □■


1855.(U.K )Admirary Chart.No.2347Japan  NIPON,KIUSIU & SIKOK  AND A PART OF THE COAST OF KOREA,
According to Krusenstern’s chart of 1827.- 「Japan is compiled from a Japanese Government Map

http://record.museum.kyushu-u.ac.jp/zn/1855/1855.html
East of Chosun(Korean)Peninsula: Broughton Bay.
Between Busan and Tsushima islet: Korea Strait
Between Japan's Honsyu and Tartary :Sea of Japan.
Map explanation text: Sea of Japan


1858.(U.K)China Pilot Second Edition King, J. W Printed for the Hydrographic Office (一次資料捜索要)
Chapter IX, in Sea of Japan
Hornet Islands:
These two barren rocky islets, in lat. 37°14′N. long. 131°55′E., were discovered by H.M.S. squadron, 25th April 1855. They are about a mile in extent, about a quarter of a mile apart, and apparently joined together by a reef. The westernmost islet, about 410 feet high, has a sugar-loaf form and is the highest; the easternmost is flat topped and much lower. The water appeared deep close to, but they are dangerous from their position, being directly in the track of vessels steering up the Sea of Japan for Hakodadi.



1860.(FR)Renseignements hydrographiques sur les îles Bashée, les îles Formose et Lou-Tchou, la Corée, la Mer du Japon, les îles du Japon (Ports d'Hakodaki, Ne-e-Gate, ... Yedo) et la Mer d'Okhotsk (French Edition) (Paperback) By Alexandre Le Gras (Need to check primary source)・
Broughton Baie  P55.133  Goulf de Broughton
Mer Du Japon


1861.(U.K)China Pilot Third Edidtion King, John W Printed for the Hydrographic Office P379) UK
http://www.archive.org/details/chinapilotcompr00deptgoog
Chapter 11 Sea of Jpaan,Gulf of Tartary, Gulf and River Amur, Sagharin island, La Perouse strait, and Sea of Okohtuk. 
P376
Sea of Japan, is bounded on the east and south by the Japan island, and on the west and north-west by
coast of Korea and Tartary. It  is about 900 miles long, N.N.E and S.S.W, and 600mileswide,  East and West, at its broadest part. Surronded by land on all sides, This sea is only accessible by the following narrow passages:-To the south by the Korea strait, which connect it with the China Sea; to the east by La Perouse and Tsugar straits, by which it communicates with the Pacific; and to the north by the gulf of Tartary ,through which it communicates with the sea of Okhotsuk by the gulf of Amurl. The Boungo and Kino channels which lead into the Suwo nada at the southwest end of Nipon, and the connection of the Suwo Nada with Korea Strait north of kiusiu island, are as yet little known*
(*this definiation is matching with IHO S-23 these days)

Tsus sima, extending about 37 miles in a N.N.E and S.S.W direction, separate the Korean strait into two chanels, the western of which is named Broughton and the eastern Krusenstern. The island is divided into two parts by a large inlet named Tsus sima sound. The southern portion is high and mountainous with two sharp peaks on its northern part, forming like asses( epars when bearing S.E.  The northern portion is comparatively low and level, except about one-third from its north-east extreme, where it rises into an high mountain.
 M. de Montravel places the south-east point of this island in lat .4"5 1/2N, long. 129"16'E; and Kiku-saki, the south-west point in 34"10'N., 129"10'E.
 H.M.S Sylbille, in April 1855, passed through Broughton Channel, between Tsus sima and the Koran coast, and it appeared to be clear of danger on the island side. A dangerous reef was seen extending a mile or more from the south-west point of Tsus simal ad the north east point appeared to terminate in a rocky reef. Captain Forsyth, who passed through  Koera strait in H.M.S Hornet, in 1856 , states that Kursenstern channel on the east side of Tsus sima is to be preferred, as it is the widest and less current was experienced in it.
 caution- when navigationg Koera strait, the barometer shuold be carefully watched. especially at night, as sudden shifts of wind frequently occur with heavy gusts, which give but little warning of their approach.

P379
The East Coast of Korea , unlike the western coast, is steep-to at a short distance from the shore. A running survey was made by the Russian frigate Pallada in 1854 of its whole extent for about 600miles, from the high detached rocks at the entrance of Chosan harbour to lat. 42"31'N., long . 131"10'E. Port Lezaref, Napoleon road or Posiette harbour, and the Tumen river were surveyed by her boats.
 The frigate ahad steady fair winds, and kept at a distance of from one to
4 miles off shore, approaching even nearer at some parts, and following
its windings, The coast has a uniform appearance; sometimes, however,
it changes suddenly; from being mountainous and rocky it becomes low add sandy, assuming its former appearance after a short interval.

P382 (As a part of east coast of Korea)
Broughton Bay-(Korea gulf of the French charts) is 93 miles wide between cape Duroch on the south and cape Petit Thouras on the north, and 55 miles deep, and Yung-hing bay and Port Lezaref at its head offer excellent shelter. The shores of the bay are winding and mostly low, and vessels can anchor in a moderate depth off them with safety.
 The north and south shores of Broughton Bay are commanded by lofty heights near the sea. The Belavenz montains, about 15 miles south-west of cape Duroch, are respectively 6.092 and  5.884 feet above the sea; and the north at 24 miles in the interior,W.N.W. of cape Petit Thouras, mout Hienfung reaches the height of 8114 feet. The shores, although wooded and verdant, are varied occassional by waste lands and
rocky cliffs.
 After passing Cape Duroch, a moderate sized bay will open out witha low sandy shore, and it probably affords good anchoring ground during southerly winds, as in general all the bays examined on their coast invariably do. A group of small islands and sunken rocks lie in the middle and in north^west parts of this bay; several of the islands have a few cedar trees. From the north extreme of the bay the coast again becomes winding and rocky, and gradually falls toward Feleny point.



1863.(U.K) Admiraly chart 2347Japan JAPAN  NIPON,KIUSIU & SIKOK  KOREA 「Japan is compiled from a Japanese Government Map http://record.museum.kyushu-u.ac.jp/zn/1863/1863.html
(Japan is compiled from a japanese goverment map, adapted to Positions determinent by MI Richards, 1855 and Commd Ward,1861. East coast of Korea to Chosen H from the Russian Survey of 1857)
East of Chosun(Korean)Peninsula: Broughton Bay (By UK?), Korean Gulf (by French)
Between Busan and Tsushima islet: West Korea Strait/East Korea Strait
Between Japan's Honsyu and Tartary :None
Map explanation text: Sea of Japan


1863.The Chinese commercial guide : containing treaties, tariffs, regulations, tables, etc useful in the trade to China & Eastern Asia : with an appendix of sailing directions for those seas and coasts (1863)  Williams, S. Wells (Samuel Wells), 1812-1884
Table of positions on the coast of china ,korea, and tartary, and off-lying islands; and in the sea of Japan, gulf of Tartary, and sea of Okohtsk, Sea of Japan and Gulf of Tartary.
http://www.archive.org/stream/chinesecommerci00willgoog#page/n649/mode/1up/search/japan+sea

In the secton they have data about Liancourt Rocks(Takeshima Japan today), and Matusima(Ullengdo,Dagelet today)

 PlacePaticular spot latitude north /Longtitude east Authorises
 Tsusima    
 Matusima Peak 37 22 00
 130 56
 Russian frigatte Pallas 1854
 Liancourt Rocks
  37 14 00
 131 55
 H.M.S Hornet 1855


 
1863.(FR)France navy chart Chart #1467 Mer du Japon France Navy (Need to check primary source)・
Mer Du Japon


1864.(U.K)China Pilot Forth Edition : Hydrographic office , Admiralty King, J. W.  UK
Sea of Japan


1865. A general gazetteer, or, Compendious geographical dictionary [microform] : containing descriptions of every country in the known world: with their towns, people, natural productions, &c., and the various remarkable events by which they have been distinguished : the population and area of all nations are also given in an appendix, including the census of Great Britain in 1861 (1865)
Brookes, R. (Richard), fl. 1750; Findlay, Alexander George, 1812-1875

http://www.archive.org/stream/cihm_17611#page/n305/mode/2up
COREA, a kingdom of Asia, bounded on the N. by Chinese Tartary, on the E. by the sea of Japan, on the S. by a narrow sea, which separeates it from the Japanese islands, and on the W. by the Yellow Sea, which separates it from China. The W. coast is flanked by innmerable islands............................................Corea extends from N.to S. from the lat. of 34.30 to 42.30.N. and from E. to W. from 125. to 129. of E. long.

http://www.archive.org/stream/cihm_17611#page/n327/mode/2up/search/japan
Dagelet island, and island about 9 miles in circumference, in the Japanese Sea, at about an equal distance from the Isle of Nippon and the coast of the Corea, in the lat. of 37.25.N. It was visited by La Perouse. It abounds with timber, which the Coreans are supposed to use in the building of boats.

http://www.archive.org/stream/cihm_17611#page/n547/mode/2up/search/japan
KIRIN, a government of Eastern Tartary; enclosed between the sea of Japan, the northern frontier of Corea, and the river of Saghalien.The emperror of China sends hither the criminals banished by the laws.


1867.
(FR)Pilote de la mer de Chine, Ve Partie, La Mer du Japon. Paris France (Need to check primary source)・
Mer Du Japon

1870.Directory for the navigation of the North Pacific Ocean [microform] : with descriptions of its coasts, islands, etc., from Panama to Behring Strait and Japan, its winds, currents, and passages Findlay, Alexander George, 1812-1875
http://www.archive.org/details/cihm_14979b

Attached map said "Japan Sea"
http://www.archive.org/stream/cihm_14979b#page/n3/mode/2up
http://www.archive.org/stream/cihm_14979b#page/n1069/mode/2up/search/japan

P683.http://www.archive.org/stream/cihm_14979b#page/n683/mode/2up/search/japan
The Seto Uchi was first navigated by H.M.S. Cruizer, in 1859, and it was passed throughout bythe allied fleet under Admiral Sir A.L.Kuper, in 1864.It contains upwards of 300 islands and rocks, with but few known dangers, and has a sea-board of nearly 700 miles, on which are situate numerous large towns and several of the provincial capitals. It abounds with safe and convenient anchorages. It communicates with the Pacific by the Kii Channel on the East, and by the Bungo Channel, between Kiusiu and Sikok, on the South; and with the Sea of Japan by the Strait of Simonoseki on the West.

P948 http://www.archive.org/stream/cihm_14979b#page/n1057/mode/2up/search/japan
Sea of Japan. There exists at present but little information regarding the navigation of the Sea of Japan. The winds there appear very available, and the currents, depending on special causes, are at times insignificant, whilst at others they run with great strength. The only thing known with certainty is, that the Japan Stream, as a rule (although with many variations of velocity, direction , and breadth, and much influenced by the wind), holds its way north-eastward from Korea Strait, and enters the Pacific by the Strait of Tsugar ; also that a stream is usually found in the autumn months setting to the E.S.E. through La Perouse Strait ; and in the summer along the coast of Manchuria to the S.W.

This description is almost matching with S-23 which definiation of Sea of Japan.
S-23 52.-Japan Sea/ On the Southwest The Northeastern limit of the Eastern China Sea (50) and the Western Limit of the Inland Sea (53. On the Southeast In Simonoseki Kaikyo A line running from Nagoya Saki (130"49'.05E) in Kyusyu through the island of Uma Sima and Muture Sima (33"58'05 N) to Murasaki Hana (34"01' N) in Honsyu. On the East In the Tsugaru Kaiko From the extremity of Siraya Saki (141"28' E) to the extremity of Esan Saki (41"48' N) On the Northeast In La Perouse Strait (Soya Kaikyo)    (Click here on google map) A line joining Soni Misaki and ishi Notoro Misaki (45"55' N) On the North From Cape Tuik (51"45.7 N) to Cape Suchcheva.

another description of Sea of Japan
http://www.archive.org/stream/cihm_14979b#page/n769/mode/2up/search/japan
http://www.archive.org/stream/cihm_14979b#page/n1027/mode/2up/search/japan
Strait of Corea
http://www.archive.org/stream/cihm_14979b#page/n679/mode/2up/search/corea


1876.(Turkey) A General Atlas of Modern Geography].Originally published/produced in [Constantinople], [1867?].

بحر يابان

(Japan Sea )


1873..(U.K)China Sea Directory," 1st Edition Vol. 4 (1873) UK
Chapter 3 Sea of Japan and coast of Korea....
P74
Korea Strait * divides the south-east coast of Korea frm the south-west coast of the Japan islands; it is split into two channels by Tsu shima.


P75
Sea of Japan, bounded on the east and south by the Japan island, and on the west and north-west by coast of Korea and Russian Tartary is about 900 miles long, N.N.E and S.S.W, and 600miles East, and West, at its broadest part. Surronded by land on all sides, This area is only accessible by the following narrow passages:-To the south by the Korea strait, which connect it with the China Sea; to the east by La Perouse and Tsugar straits, by which it communicates with the Pacificland to the north by the gulf of Tartary ,through which it communicates with the sea of Okhotsuk by the gulf of Amurl this area is ,as far as is known, clear of rocks or dangerous with the following exceptions*:


(*my note: it already stated same recognization written in S-23 (of IHO) which definiation of the Sea of Japan.)

P76
The East Coast of Korea
P78 Broughton Bay (As a part of East Coast of Korea article)
Broughton Bay-(Korea gulf) is 93 miles wide between cape Duroch on the south and cape Petit Thouras on the north, and 55 miles deep, and Yung-hing bay and Port Lezaref at its head offer excellent shelter. The shores of the bay are winding and mostly low, and vessels can anchor in a moderate depth off them with safety.
 The north and south shores of Broughton Bay are commanded by lofty heights near the sea. The Belavenz montains, about 15 miles south-west of cape Duroch, are respectively 6.092 and  5.884 feet above the sea; and the north at 24 miles in the interior,W.N.W. of cape Petit Thouras, mout Hienfung reaches the height of 8114 feet. The shores, although wooded and verdant, are varied occassional by waste lands and
rocky cliffs.


1873.Preliminary Chart of Japan: Nipon, Kiusiu, and Sikok and part of the Korea   Hydrographic Office     London: the Admiralty, 1873  〔Attached map of China sea directory 1st edition?)
East of Chosun(Korean)Peninsula: Broughton Bay (By UK?), Korean Gulf (by French)
Between Busan and Tsushima islet: Korea Strait /Western Channel/Eastern Channel
Between Japan's Honsyu and Tartary :None
Map explanation text: Sea of Japan


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
Strait of Kora: Channel of Corea/Strait of Korea
Sea of Japan:Sea of Japan.

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


1886. A directory for the navigation of the North Pacific Ocean [microform] : with descriptions of its coasts, islands, etc., from Panama to Behring Strait and Japan, its winds, currents, and passages (1886)
Findlay, Alexander George, 1812-1875
http://www.archive.org/details/cihm_14978

Attached map Sea of Japan
http://www.archive.org/stream/cihm_14978#page/n3/mode/2up
http://www.archive.org/stream/cihm_14978#page/n5/mode/2up

Sea of Japan;(P915/N1065) http://www.archive.org/stream/cihm_14978#page/n1065/mode/2up/search/oliv
The SEA of JAPAN, bounded on the East and South by the Japanese Archipelago, and on the West and N.W. by the coast of Korea and Russian Tartary, is about 900 miles long. N.N.E and S.S.W....,and 600 miles wide.East and West, at its broadest part. As far as is known, it is of rocks or dangers, with the following exceptions;
Liancourt Rocks were discovered by the French ship Liancourt, in 1849; they were also called Menalai and Olivutsa Rocks by Russian frigate Pallas, in 1854; and Hornets Islands by H.M.S Hornet, in 1855. Captain Forayth, of the letter vessel, gives their position as lat. 37'14N., long. 131"55 E., and describes them as two rocky islets, covered with guano, extending about 1 mile N.W. by W. and S.K by E., and apparently joined by a reef. The western islet, about 410ft, high, has a sugar-loaf form; the eastern is much lower, and flat-top ped.
MATSU SIMA, or Dagelet Island, is a collection of sharp conieal wooded hills, crowned by an imposing peak, 4000ft. high, is the centre, in lat. 37 30 N., long. 130 53'E. It is 18 miles in circumferences, and there are several detached high rocks along its ashores, some reaching an elevation of 400 to 500 ft. The shores are so steep that soundings could only be obtained by the Actaeon's boats, almost at the base of the cliffs. Landing may be effected in fine weather with difficulty. In spring and summer some Koreans reside here, and build junks; they also collect and dry large quantities of shell-fish.
Waywoda Rock is mid to have been discovered by the Russian corvette Waywoda. It appeared to be 12ft. high,. 70ft broad, and its approximate position is lat. 42 14 1/2N long 137 17E
Tsushima....................................................................................


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.


・1898.Coronet memories : log of schooner-yacht Coronet on her off-shore cruises from 1893 to 1899 (1899)
attached map:Japan Sea
http://www.archive.org/stream/coronetmemoriesl00londiala#page/n11/mode/2up

P152 http://www.archive.org/stream/coronetmemoriesl00londiala#page/152/mode/2up/search/japan+sea
Shimonoseki means Lower Barrier. Here we arrived this morning about noon, but insteado f anchoring at once we went past the harbor and around the Island Rokuren, returning to Shimonoseki at half-past one. The harbor entrance, both from the strait and from the Japan Sea, is guarded by strong forts, commanding wide views in every direction. The bay is fillled with junks, sailing vessels, and steamers, the latter coaling here for the voyage to foreign countries, as well as throuhg the Inland Sea. This is free port for both rice and coal. While anchoring a French mail steamer bound for Kobe passed us. This strait was the scene of great activity during the long war, as all the tranports started from here.Mr Halsey was living here at that time , and has pointed out all the interesting places.
 
 
Conclusion:IT is Before Russo-Japan War (1905) and Annexation of Korea (1910) that  the global standard name of Sea of Japan and Strait of Corea(korea) already been established as the global standard name. So It can concruded that  Korean claim is wrong and distoture that the name of "Sea of Japan is cononial / expansionism origin-name".
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