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150th Anniversary of the first nautical chart created in Jap

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150th Anniversary of the first nautical chart created in Jap

Postby aukepalmhof » Tue Mar 23, 2021 7:47 pm

2021 Nautical-Cartography-in-Japan-150th-Anniversary 1.jpg
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2021 Nautical-Cartography-in-Japan-150th-Anniversary. MS jpg.jpg
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2021 heiyo Nautical-Cartography-in-Japan-150th-Anniversary.jpg
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2021  sectant Nautical-Cartography-in-Japan-150th-Anniversary. 1 jpg.jpg
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2021 airplane Nautical-Cartography-in-Japan-150th-Anniversary 1 (2).jpg
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2021 heiyo Nautical-Cartography-in-Japan-150th-Anniversary 1 (3).jpg
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heiyoL.jpg
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For the 150th Anniversary of the first nautical chart created by Japan, four stamps were issued and a miniature sheet. The stamp and MS shown.

(1) Nautical Chart No. 1 "Rikuchu Kamaishi Port Map
Rikuchu no Kamaishi Kamaishi (Part) and surveying ship "KASUGA ".
The first nautical chart created by Japan alone with modern technology was published in 1872 (Meiji 5).
The surveying ship "KASUGA" was a ship engaged in this survey and was a coal-fueled steamship. viewtopic.php?f=2&t=17628

(2) Multi-beam echo-sounding survey by ship. (The ship is the HEIYO.)
It is a state of a sounding survey by a ship using sound waves. A sound wave beam is emitted from the bottom of the ship toward the bottom of the sea.
The water depth is measured by the round trip time. By emitting a large number of beams, a large number of water depths can be obtained at one time.
He was first introduced in Japan in 1983 (Showa 58).

(3) Tools used for surveying and drafting from the early Meiji period to the Showa period.
・ Sextant: Measures the angle between two points.
・ Sounding lead: Attach a rope and drop it in the sea to sound the water depth and the geology of the seabed.
・ Sanjo: The position of the ship at sea is shown on the map using the angle measured by a sextant between her two landmarks on land.
Using these tools, the water depth was measured one by one over time and effort, and the first nautical chart of Kamaishi Port was created.

(4) Laser sounding survey by aircraft
It is a state of a sounding survey by an aircraft using laser light. Capturing the reflected light on the sea surface and the seafloor, respectively
The water depth is measured from the difference. You can quickly investigate shallow waters where vessels are difficult to navigate.
He was first introduced in Japan in 2003 (Heisei 15).

(5) Current nautical chart "Kamaishi Port" (part) and large survey vessel "HEIYO"
This is the latest nautical chart of Kamaishi Port published in 2020.
"HEIYO" is the latest large survey vessel belonging to the Japan Coast Guard, the only nautical chart production organization in Japan. 2020

Japanese Post (Google translated.)


Of the servey vessel HEIYO depicted on two stamps, I could not find much information on the internet, what I did find is given below but more info and details are needed.

Vessel Name: HEIYO.

Pendant: HL11

Date of Commission: 29 January 2020

Gross Tonnage: 4,000 tonnes

Length: 103 metres

Beam: 16 metres


HEIYO is fitted with the latest surveying tools including multi-beam sounding equipment, an autonomous underwater vehicle (AUV), and autonomous survey vehicles (ASV). The ship is equipped with an azimuth thruster for precise position holding capability for enhanced oceanographic surveying. HEIYO will conduct surveys of seabed topography and geology necessary to secure Japan's maritime interests in the Sea of Japan and the East China Sea.

Japan 2021 84Y sg?, Scott? and MS sgMS?, Scott?
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