"The Sea Chart of Hokkaido and Northeastern Islands(北洲及北東諸島)" was made by Hydorographic Office of Japan(日本水路部), basing on the British Navy's seachart, in 1893 originally, just a year before the 1894 version of "Choson Seaway (朝鮮水路誌)" was published. The map plots Waywoda rock near Okushiri island of Japan's Hokkaido and it also shows the trace Japanese Navy did fathomed to survey around the area, but labelled as "non-existant" just like British "China Sea Directory" reported. The location is exactly the place 1894 "Choson Seaway" reported and it is clearly far outside of Korean territory at a glance.
Pro-Korean scholars like Prof. Hori Kazuo(1987) wrongfully claimed as follows and pro-Korean scholars have been blindlessly following his unrealistic claim even up until now.
"However, marine charts usually show geographical features and do not specify sovereign rights to islands in them. As for sovereign rights to islands, therefore, one has to consult a guide to sea routes, an expounder of a chart.(p105)"
"Moreover, the 1894 and 1897 editions of the Chosen suiroshi (Korea's Sealanes) by the Japanese Navy show Liancourt Rocks/Tokdo,26) along with Ullungdo. There is no doubt the Japanese naval hydrographic anthorities were aware Takeshima/Tokdo belonged to Korea around the end of the 19th century."
First of all, waterway magazines are just "guide to sea routes" and they don't represent the "sovereign rights to islands". They are written for the safety of the voyages as well as seachart. In fact, Liancourt Rocks was listed along with Matsushima(Ulleungdo) and Waywoda rock as "dangerous rocks in the Sea of Japan(左ニ記載スルモノヲ除ク外日本海内絶エテ暗岩危礁ナシ)" for the safe voyages in 1894 "Choson Seaway". And Waywoda Rock was reported as situated in lat. 42°16′N., long.137°18′E. , way up north from Korean territorial limit in the first place. Pro-Korean always wrongfully refer to this book as one of the evidences Japanese considered Takeshima as Korean territory only because it was listed in the section "East Coast of Choson" of "Choson Seaway.", ignoring Waywoda rock, which is clearly outside of Korean territory, was also listed in the same section.
Moreover, the preface of this waterway magazine clearly depicts eastern limit of Korean territory is 130º 35' E.longitude, under the name of the Kimotsuki Kaneyuki (肝付兼行),a director of Hydrography Department. From this fact, we can see that Kimotsuki clearly recognized that Takeshima/Dokdo was outside of Korean territory when Nakai met him in 1904.
Lastly, Eastern Strait(東水道) of Choson Strait, between Tsushima and Iki(壱岐) of Nagasaki, Japan was also listed in the previous chapter(Chapter 3). You cannot claim that the strait between Tsushima and Iki also belong to Korea only because it is listed in the "Choson Seaway". It also proves that Liancourt Rocks in this waterway magazines were not for territorial issue, but only for the safety of voyages.
It is funny to see that the Prof. Hori's old unreliable thesis based on out-of-date resources, written more than 20 years ago, is still keep followed by Korean scholars and made them look stupid worldwidely.