Japan’s Takeshima X-Files II – Dokdo and Japan’s Imperial Navy
The Ugly Truth Behind Japan’s Claim to Dokdo – Takeshima Island

What Japan’s MOFA doesn’t want you to know about Japan’s 1905 Annexation of Dokdo Island!
The following documents are a collection of files that the Japanese Foreign Ministry would prefer remain unseen by the general public. For obvious reasons, those who lobby for Japan’s claim to Takeshima (sometimes referted to as Liancourt Rocks) have for a more than a century, kept the Japanese Imperial Navy’s involvement in the annexation of Dokdo out of the public eye.

In this three page series however, original historical records from three of Japan’s battle cruisers the Niitaka, the Tsushima and the Hashidate help to remove the veil of secrecy that once concealed the motivation behind Japan’s claim to Dokdo. The ships’ records are arranged chronologically to show how the Japanese Imperial Navy systematically surveyed, mapped and zoned Dokdo Island before the island was finally integrated into Japan’s war plan against the Russian Navy during the Russo~Japanese War of 1904~1905.

The Tsushima was a protected cruiser of the Imperial Japanese Navy, designed and built in Japan by the Kure Naval Yards near Hiroshima. It was the lead ship of the Tsushima-class, which also included Tsushima’s sister ship Niitaka (above). This was the second cruiser class built to a completely Japanese design.

The Tsushima’s records could be said to be a “smoking gun” of sorts for Korean historians who assert that Japan’s annexation of Liancourt Rocks (Dokdo) was nothing more than a military annexation. The November 1904 logbook predates Japan’s annexation of Liancourt Rocks (Dokdo Island) it also cleary reveals how the Japanese warship Tsushima surveyed Dokdo for military watchtowers and telegraph stations that would be linked to Korea’s Ulleungdo Island and Matsue, Japan in Shimane Prefecture.

The Japanese Imperial Navy battle cruiser Tsushima and her sister ship the Niitaka both conducted surveys of Liancourt Rocks to determine the islands suitability for watchtowers and telegraph stations just months before the islands annexation during the 1904~1905 Russo Japanese War
The Logbooks of the Japanese Imperial Navy Warship Tsushima

A Translation of the Tsushima’s Logbooks, November 1904
Page 1.
October of the 37th Year of Meiji (1904)
The Logbook of the Warship Tsushima

Page 2.
“At 1:30 P.M. the Takechiho departed toward “–” and “–” gu. At 1:50 P.M. the Naniwa returned to Ojaki. At 3:45 the Chihaya arrived from “-” gu. At this afternoon the Second Fleet left the Yagumo behind at “–” gu and the rest sailed off to remain home…”

Saturday, October 22nd (Takeshiki)
A.M. B NW 4 -2 30.25 30.14 59.52
P.M. BC NN – W – 1
“Today other ships conducted battle drills (trumpet and firing). At 7:15 A.M. the Niitaka arrived from Daeryun. We recieved confidential order #259. The summary is as follows (below)..

“Intructions given to the Commander of the Warship Tsushima October 23rd, 1904. Depart by tomorrow at your convenience. Arrive at Matsushima (Ulleungdo) on the morning of the 24th…”

Page 3.

“…and get involved with the same watchtower extension construction and accomodate a number of workers. Also make a stop at Jukpyeon and Ulsan to receive a number of people for the same watch tower extension work and return…”

Sunday, October 23rd from Takeshiki to Ulleungdo
A.M. BC NE 2 30.32 29.22 62.50
P.M BC NE SW 1 -2

Physical Examinations
“At 9:30 A.M. departed from Takeshiki bound for Matsushima (Ulleungdo)

Monday, October 24th near Ulleungdo.
A.M. BC SW 3 – 4 30.14 65.61
P.M BC NW 4 – 1

“At 7:00 A.M. we neared the East watch tower on Matsushima (Ulleungdo). While drifting, lowered life rafts from positions #1 and #2, and started to pick up workers strong winds and high waves made the job very difficult….”

Page 4
“…and at 10;30, finally after a long struggle, succeeded in getting all the workers on board. Then sailed off toward (Ulleungdo’s) West watch tower at 11:25 and lowered life rafts of #1 and #2 and started to load workers. At noon the work was done and we started to sail off to Jukpyeon Harbor.

The number of workers assigned to Matsushima (Ulleungdo Island)
The East watch tower : 23 (workers)
} Total 41 Workers
The West watch tower :18 (workers)

At 5:00 P.M. we arrived at Jukpyeon Harbor and dispatched lifeboats of #1 and #2 to pick up laborers and one engineer. At 6:00 P.M. we departed toward Ojaki with them on board….”

Tuesday, October 25th From Urujaki (Ulsan) to Takeshiki
A.M. UC SE – NW 30.26 30.14 70.61

Page 5
“At 8:30 A.M. we arrived on Urujaki (Ulsan) , dispatched lifeboats #1 and #2 to pick up 13 laborers and at 9:40 departed for Takeshiki. At 4:15 P.M. temporarily anchored at Ojaki. Disembarked the picked up workers and then at 6:00 P.M. arrived on Takeshiki. A list of warships moored there are as follows:
On Ojaki: Ijeumo, Ajuma, Yagumo, Takachiho, Anpyeongseon #1 and #3, Ko – Oh – #67
On Takeshiki: Naniwa, Chihaya, #2 and #4, the 11th Fleet, the 17th Fleet.

Wednesday, October 26th Takeshiki
A.M. BC 0 – 1 30.23 30.15 66.58
P.M. B 0 – 1

“At 7:00 A.M the ship Chihaya departed for “–” and “–”. The ship Kasuga Maru arrived from “–”. At 12:50 P.M. the ship Naniwa departed for “–”. At the same time our ship returned from Ojaki.

Page 6
November 37th Year of Meiji
The Logbooks of the Warship Tsushima

Page 7
“At 1:40 P.M. we departed for “–” gu. At 5:30 we inspected an English boat “Long Ships” upon boarding at the position of 9 nautical miles southeast of Kanjaki. The English ship left Shanghai at noon on the 9th and was headed for Koubae. With nothing suspicious found the boat was released. (The cargo consisted of cotton and miscellaneous cargo). Today we also conducted fire drills. The ship Yagumo was incorporated into the 3rd Fleet. the ship Tokiwa was reassigned back to the 2nd Fleet. Patrol ship c departed.

Sunday, November 13th On high level alert as we patrol the Tsushima Strait.

Page 8
A.M. OCR SSW 2 30.23 30.03 67.63

“At 3:20 P.M. we arrived at Takeshiki (naval base) and conducted a physical examination of the whole crew, and strenghthened each division. We received confidential order #275 as follows”
“Order to the fourth corp, November 13th of the 37th Year of Meiji. Return from Takeshiki.
In accordance with confidential order #698, from command let the patrol duty of the fourth corp be changed as follows and for the time being, with the four ships below, serve your duties for three days from the day after tomorrow, the 15th. Also keep a watch out for smuggling ships and the fleet “Orajiyo” Let the flagship be either a temporary A or B patrol ship and use four ships for a rest or a checkup.
(a) Patrol ships are attached.
(b) Patrol ships of CFG are dispatched by order.”

Page 9
“Recieved the confidential direction #276 as follows:

“Instruction to the commander of the frontrunner Tsushima. November 13th of the 37th year of Meiji (1904) Takeshiki, the ship Kasagi.

1. Officers must find out the source of workers and materials coming from different places upon their arrival and let your duties be served. As for the order of return and the quota for the day consult appropriate official directly to report the decisions of each ship.

(a) Inform of the test of the wireless telegraph communications of Takasaki Mountain along with the test technician.
(b) Survey Liancourt Rocks (Dokdo Island) for its suitability for telegraph installation (not wireless telegraph)
(c) Dispatch workers and materials for Matsushima, (Ulleungdo) Jukpyeon, and Cape Ulsan watchtowers.

2. Those workers and materials for the watchtowers above (Ulleungdo, Jukpyeon, Ulsan) are to arrive on the morning of tomorrow, the 14th….”

Page 10
“Everybody arrived from Sae-ryu-maru. We headed for the Takasaki Mountain wireless telegraph station. The test technician is supposed to arrive on the morning after tomorrow, the 15th.

Monday , November 14th (1904) Takasaki Mountain
A.M. BC W1 30.01 29.92 63.56
P.M. BC WNW – W 2 – 5

Supplied with coal and water. At 1:00 P.M. we departed for Naniwa. At 6:50 arrived from Takachiho. Second Lieutenant “Haya Saung left the ship.

Tuesday, November 15th Takeshiki
A.M. BC NW 2 – 3 30.10 30.04 51.49
P.M. BC NW – W4

At 1:00 PM departed for Chihaya. At 2:05 arrived from Kasgamaru…”

Page 11
“Performed artillery exercises.

Wednesday, November 16th Takeshiki
A.M. BC NW 4 – 5 30.04 49 14
P.M. BC NW 4 – 5

Gales since noon of the 14th, they have hardly abated. The winds are continually blowing from the northwest. The maximum wind speed is about 6. The lowest pressure was 29.96 at 8:00 A.M. on the 14th and since then it has grown higher than 30.25 at noon. Received a warning at 4:20 this afternoon: “Sea storms are expected, be cautious with 2,3,4,5,6,7,8, and 10 districts of coastal regions. The low pressure is staying in cover the South coast. Approaching the northeast. Around the center are hurricane-force winds….”

Page 12
“At 5:45 the depths of the waters 1.8 meters. Waves 3 meters high. At 1:40 P.M. the ships Ninawa and ~Muji arrived from Miura Bay.

Thursday, November 17th Takeshiki
A.M. BC NW 3 – 4 30.44 30.28 51 43
P.M. B B 0 – 1

At 10:00 A.M. we departed toward Takachiho Choko. We conducted artillery exercises and signalling. At 9:00 A.M. received a message. Learing of the warning to districts 2,3,4,5,6,7,8,9 of coastal regions, we departed from Oki for Tokigo….”

Page 13
Friday, November 18th Takeshiki
A.M. BC G – 0 – 1 30.45 30 36 56 43
P.M. BC NW – W 3 – 2

“At 12:30 P.M. Kasuga Maru. At 2:00 we daparted for Kasagi Choko. Bad weather for consecutive days has kept the official at Sasaebo (Nagasaki Naval Base) from coming. Thus confidential order #276 has been delayed from being carried out, but since he made it here today, workers and materials boarded at 3:10 and we parted from Ojaki at 5:30. We went to Jukpyeon Harbor….”

Saturday, November 19th From Ojaki to Ulleungdo
A.M. BC WNW 2 – 4 30.35 30.24 65 55
P.M. BC SW 2

“At 8:40 A.M. we arrived at the entrance of Jukpyeong Harbour. We lowered lifeboat #2 to land materials for watchtowers, sailed off to Matsushima (Ulleungdo) at 9:20, and temporarily anchored at 4:20 at Todong Port near the watchtowers on Matsushima…” (cont..

Page 14
… to land materials for the watchtowers.

From the deck of the ship the grade of elevation is Todong Gak North 55 degrees East
Shiru Gak North 84 degrees West
Shiru Gak South 48 degrees West

The depth of the water is about 11 shim (1 shim = about 6 feet) And it has sand.

We measured the depth of the water around the port and found no danger.

Sunday November 20th From Ulleungdo to Liancourt Rocks (Dokdo)
A.M. BC 0 – 1 30.33 30.24 61 55
P.M. BC W 1

“At 7:20 we arrived at Liancourt Rocks (Dokdo). With the ship floating, Bu-jang-so-ja (high ranking naval official) Yamanaka Shibakichi and Eui-jang-dae-gun (another officer) were sent for inspection. At 10:55 both officials returned and we sailed off for Oki Island…”

Japan’s Warship Tsushima’s Report on Dokdo – The November 20th 1904 Survey Report
Two weeks before seizing Dokdo, Japan’s Navy confirms military construction possiblity on Dokdo.
From the Tsushima’s issued instructions above it is clear Japan’s military involvement on Korean territory and her ambitions on Dokdo island were inseparable from Japan’s other military activities in Northeast Asia.

On the morning of November 20th 1904 Deputy Commander Yamanaka Shibakichi and a guard of the Tsushima conducted a detailed survey of Dokdo’s topography her surrounding geography for the purpose of building a military observation and telegraph station. The details of this survey are recorded in the Japanese Defense Historical Archives. The orginal documents and translation are below. It should be emphasized, all of these activiites took place before the Japanese annexed Dokdo Island in February 1905, still during the largest war to the day.

The above images are the Dokdo contruction survey report by the Japanese Navy. The red dot was added indicating Dokdo’s West Islet survey and the blue dot was the East Island’s report. It was concluded a military watchtower could be built on Dokdo’s East Islet. (click)
Translation of the Tsushima’s November 20th Survey of Dokdo
No 67 January 5th, 38th Year of Meiji (1905) Report on Liancourt Rocks by the captain of the Japanese Imperial Warship Tsushima “Saedo Taketaeru” to the Japanese Navy Hydrographic Director.

“…Liancourt Rocks are only a small island consisting of two main islets facing each other and surrounded by little rocks. These small rocks are mostly flat, and the tops are slightly above the surface. Around the two main islets are a number of small caves, were groups of sea lions inhabit. The main islets are just bare rocks without any trees, and a lot of wild grass in on the southern side like moss. There are sea winds blowing all of the time. Climbing is impossible from anywhere all around because of their precipitous cliffs and soft layers. There’s no level ground, both sides of the water passage between the two main islands are so narrow. There are a couple of flat stone areas but none of them are safe from the waves. On the East islet stands a little hut, which is used by fishermen to catch sealions in the summer. Now only the ruins of it lie after its sudden destruction. Judging by what is left of it, one can only imagine how powerful the winds and waves must have been when the damage was done. …”

“…For construction sites that can be protected from the wind and waves somewhere else only two areas below are feasible.

(a) On the East side of the West Islet stands a peak whose side is so steep that the upper part cannot be climbed upright, but the lower part is gradual enough to make the way up to the middle of it. Geologically it is made up of strong stone here, and about 3 pyeong (unit of land) of level area can be made of it if some work is done on it. Winds from every direction can be blocked except from the East.

(b) At first glance the top of the East Islet seems to have a number of flat areas, and thus seems to be suitable for construction of structures. However, a survey of this islet reveals that an enormous amount of construction is needed for a path to access a certain area. Although it is inevitable that the islet is exposed to, and thus affected by bad weather, on the South is a flat area of about 3~4 pyeong (a unit of land), and one side of the northwest appears to be isolated…”

Described as above, the whole island is steep cliffs, and it requires a small boat to get from one islet to the next one. On one southwest corner of the West islet is a cave, and out of this umbrella-shaped rock runs a very small quantity of water. But because the water runs like rain, it is very difficult to gather it. There are several other places where water runs down along the mountainsides from the top, but the quantity is not much and the water routes are contaminated with sealion excrement. A test of the water running out of the southeastern corner of the East islet shows it gives off a strange odour and its yellowish muddy colour further confirms it is contaminated. The test result for chemicals came out as below, and it verifies that the water is anything but drinkable.

Physical properties: Clay brown, emits odour, murky and acid reactive. Chlorine: large quantity, Lactic acid: large quantity, Nitric acid: zero, Nitrous acid: zero, coal: small traces, Ammonia: small quantity, organic substances: medim quantity…”

…”It is said that sealion hunters sometimes draw water from the island for cooking if the ocean is calm, but they get their drinking water from elsewhere. To be brief, the main island is barren, bare rocks exposed to the violent ocean winds, but no area of good size is to be found to give shelter. No fuels for cooking, no drinking water, no food. They say there are times when a good many people come to hunt for sealions during June and July every year. While hunting, they temporarily stay for about 10 days at a time, but they rarely come to hunt except for this season. Despite hunting, from my observations, there are still many sealions left out of the thousands. Hunters still hesitate to come during June and July because it’s challenging to avoid the winds and waves during this season….”
The Appended Survey Map of Liancourt Rocks (Dokdo)
Drawn by Deputy Commander Yamanaka Shibakichi (山中少佐) November 20th 1904
The image on the left below is the original map of Dokdo drawn by the Tsushima’s Deputy Commander Yamanaka Shibakachi. To the right below the same map has had colour and a legend added to better explain the Japanese Kanji on the map. Deputy Commander Yamanaka included the best locations for the construction of a naval surveillance outpost. Also included were the locations of water sources some potable, some not. The locations Yamanaka Shibakashi drew corelate exactly to the report issued to the Hyrographic Director Kimotsuki who was instrumental in pushing forth the annexation of Dokdo..

Miscellaneous Japanese Military Survey Maps of the Korea Region
It wasn’t just Dokdo Island that was appropriated for military use. All of the strategic areas surrounding Japan including China’s Port Arthur area were utilized to defeat Russia. For example below far left is an overview of all underwater telegraph systems installed in Korea, Japan and China during the Russia Japanese War. Moving to the right, is a chart of Korea’s Cape Ulsan note the characters 望樓 for watchtower. In the center there can be seen map of Korea’s Jukpyeon Harbor again showing 望樓 for watchtower and 電信 for telegraph lines. Second from the right is a chart of Korea’s Ulleungdo Island. It shows two watchtowers 望樓 but later had another one installed. Telegraph lines were connected to Korea and Dokdo~Matue, Japan. Far right is a Japanese military map of Takasaki Mountain on Oki Island where watchtowers and telegraph lines were planned to be installed. This idea was scrapped and the line installed directly to Matsue.

Above are some examples of Japanese strategic military maps of Japan, Korea and China from the Russo-Japanese War of 1904-1905. (click pictures for larger image)
Japan’s Takeshima X-Files II – Dokdo and Japan’s Imperial Navy – The Only Conclusion

Japan’s Military Control Over Korea and her 1905 annexation of Dokdo were insperable.
The logbooks of the Tsushima combined with captain Saedo Taketaeru’s report and Yamanaka’s appended map are proof positive that Japan’s motives for Dokdo’s annexation were of military in nature. This can be proven by reviewing some of the log entries above. Two dates are significant.
On November 13th 1904 The Tsushima received confidential directive #276. These instructions are clear evidence of Japanese military aggression on a couple of points. First, the strongest evidence is the outright command for the Tsushima to survey Liancourt Rocks (Dokdo) for the installation of military telegraph lines. Secondly, when we note the other commands given to the warship something else becomes evident. Confidential Directive #276 also called for the Tsushima to work on naval watchtower construction on Korean coastal areas. The Tsushima was ordered to shuttle naval communications technicians, workers and materials to three strategic locations on Korean soil: Ulsan, Jukpyeon and Ulleungdo Island.

Thus, November 13th’s 1904 Confidential Directive #276 demonstrates the inseparability of Dokdo’s military annexation from the Japanese Navy’s appropriation of Korean territory and gradual annexation of the entire peninsula.

On January 5th 1905 the summary of the Tsushima’s captain Saedo Taketaeru was completed and submitted. This report was by and large a study of the topography of Liancourt Rocks for the feasibility of constructing naval surveillance and communications post. The survey of Liancourt Rocks also included a very comprehensive study of water quality on the island indicating again that the Japanese Navy wished to station military personnel there for an extended period of time.To whom this report was submitted to is interesting. Captain Saedo Taketaeru issued this construction report to the Director of the Japanese Navy’s Hydrographic Department.

This submission of Dokdo’s survey takes us full circle to the Navy’s Hydrographic Department’s director Kimotsuki Kenko who was instrumental in guiding through the application of a private individual (Nakai Yozaburo) to lease Dokdo and have it incorporated in Shimane Prefecture. It is important to note, during the Russo Japanese War, the Japanese Navy’s Hyrographic Department became a strategic organ and provided critical information for directing naval military operations.

Confidential Directive #276 and the survey of Liancourt Rocks was not a routine event. This is proven by the delays as reported on the logbook’s entry of November 18th as they waited for “special officials” to arrive to carry out these plans. The survey map of Liancourt Rocks was of great detail considering the inspection only took about three hours. Deputy Commander Yamanaka Shibakichi’s map of Dokdo is of exceptional quality.

A career navy man since the age of 19 Yamanaka would be promoted to commander only a week after the submission of the report on Liancourt Rocks. By the year 1914 Yamanaka Shibakichi would reach the rank of Vice Admiral of the enitre Japanese Imperial Navy.

In closing, the Tsushima’s survey is definite proof of Japan’s military motives for the annexation of Liancourt Rocks (Dokdo) This is obvious because these activities predate the actual annexation of the island in late February of 1905. Japanese Takeshima lobbyists would have the public believe these activites were an afterthought but as shown above with actual documents this can be dismissed as an obvious denial campaign.

Before the documents and maps above could be seen, many Japanese Takeshima lobbyists dismissed Korean accusations of Japanese military involvement behind the annexation of Dokdo as just bluster. Koreans have failed in that they haven’t presented this convincing evidence in English along with the primary documents to bolster their assertions.

Hopefully the records above can set the record straight on this dispute. The public can then decide for themselves whether or not Japan’s claim to Takeshima was a part of a natural, peaceful process as the ICJ requires for the acquisition of new territories. However, if Japan’s claim is wholly based on a miitary annexation at the height of a major was it’s doubtful she will ever muster much, if any, international support at all.