A
sundial is a device that tells the time using the position of the sun.
Sunlight casts a shadow onto the flat surface telling you the time.

Namtan Boat is a navigation training boat. It was used to fix the error of the magnetic variative and magnetic deviation. When the magnetic compass on a ship has a problem, it solves the problem by changing the error in the north.
This ship was built by Prince Arpakornkeattiwong (Prince of Chumporn) and he called her Namtan Boat to remember the war between the Thai and the French in the Chao Praya River in 1893.
H.T.M.S.
Thonburi
was a ship in frigate fleet. She has an important
history. She fought with the French in the battle of Koh Chang in 1941.
It was the history of Thai Navy courage. We won but H.T.M.S. Thonburi sunk. After H.T.M.S. Thonburi sunk, she was salvaged by the Royal Thai Navy.
Her bridge and her cannon are kept in the Royal Thai Naval Academy to commemorate “The Battle of Koh Chang”.
Vice-Admiral
Phrarachawangsan (Sri Kamalanavin) was born in Tambon Thajean Ampher
Mueang Samutsakorn. He was a son of Lek-Ju Kamalanavin and had one
brother which was called Sin Kamolnawin. Sri Kamalanavin graduated from
Suankularb in England. He came to study at the Royal Thai Naval Academy
in the year 1903. Later he was promoted to Ensign. He was the
commander
of H.T.M.S. Kumronsin and commanded H.T.M.S. Kumronsin from Japan to
Thailand in the year 1912. In that year he was titled
Lieutenant-Commander Laung Prayudnavayuth (Sri). He became the
commander
of Reauphratheenangmahajakri [a
Royal ship, Ed.], and then he became the
commandant of the Royal
Thai Naval Academy and was promoted to Phrarachawangsan [a Royal title, Ed.]
on 24 March
1921. He was Privy councillor in the years 1927-1933. In
period of King Rama 7 he was the minister of
Defence (1932-1933). Vice-Admiral Phrarachawangsan was the ambassador
int
London from year 1935 to 1939.
Interview
Namtan Boat is a navigation training boat. It was used to fix the error of the magnetic variative and magnetic deviation. When the magnetic compass on a ship has a problem, it solves the problem by changing the error in the north.
This ship was built by Prince Arpakornkeattiwong (Prince of Chumporn) and he called her Namtan Boat to remember the war between the Thai and the French in the Chao Praya River in 1893.
H.T.M.S.
Thonburi
was a ship in frigate fleet. She has an important
history. She fought with the French in the battle of Koh Chang in 1941.It was the history of Thai Navy courage. We won but H.T.M.S. Thonburi sunk. After H.T.M.S. Thonburi sunk, she was salvaged by the Royal Thai Navy.
Her bridge and her cannon are kept in the Royal Thai Naval Academy to commemorate “The Battle of Koh Chang”.
Interview
Introducing Captain Krirop
Kamalanavin.
1 Where do you work?
I work as Assistant-Professor at the Marine and Mechanical Engineering Department of the
RTNA.
2 What subject do you teach in Royal Thai Naval Academy?
I teach metallurgy. I have been teaching for 25 years since 1987.
Questions
1 What do you think about the History Park of the RTNA?
I think it is beautiful.
2 Whose is the statue in the History Park? Could you give us some information about him?
The statue is Prayarachawangsan (Sri Kamalanavin). He is my grandfather. He was the
first naval cadet. He graduated with the highest score from the RTNA.
3 Do you know about the sundial? How important is the sundial for Naval Cadets?
I am not sure but I think it is used for telling the time for ancient people by using the sun.
4 Do you know about Namtan boat? Who built Namtan boat and why?
Namtan means sugar and sugar can not float on the water like this boat. It used to be a simulator, not a real boat.
5 What is the History Park’s problem? How can we improve the History Park?
I think in the History Park we should put more historic naval equipment.
1 Where do you work?
I work as Assistant-Professor at the Marine and Mechanical Engineering Department of the
RTNA.
2 What subject do you teach in Royal Thai Naval Academy?
I teach metallurgy. I have been teaching for 25 years since 1987.
Questions
1 What do you think about the History Park of the RTNA?
I think it is beautiful.
2 Whose is the statue in the History Park? Could you give us some information about him?
The statue is Prayarachawangsan (Sri Kamalanavin). He is my grandfather. He was the
first naval cadet. He graduated with the highest score from the RTNA.
3 Do you know about the sundial? How important is the sundial for Naval Cadets?
I am not sure but I think it is used for telling the time for ancient people by using the sun.
4 Do you know about Namtan boat? Who built Namtan boat and why?
Namtan means sugar and sugar can not float on the water like this boat. It used to be a simulator, not a real boat.
5 What is the History Park’s problem? How can we improve the History Park?
I think in the History Park we should put more historic naval equipment.