Naval Museum is a special type of museum, established for collect and preserve of valuable ancient and historical items and places, that related to the Navy. Inside the museum, there are lots of naval historical information such as naval battles in the past, including the weapons used during that time. Furthermore, there are numbers of ancient warship models such as the Royal Barges commissioned during the era of King Rama the Fifth, H.T.M.S. Phra Ruang, He-Ra Ship, and the most interesting H.T.M.S. Matchanu.

The exhibitions in Naval museum divided into Outdoor exhibition, Hall 1 and Hall 2 ;

Outdoor Exhibition:

Displays large weapons and armament on outdoor grass-field, in front of the building and the surrounding area. Comprises;

- Submarines                 - River Patrol Boat (PBR boat)

- HU-16B aircraft                                          - Ancient Cannon

- Landing Vehicle Truck (LVT MK4)               - Field Artillery

- Armor Vehicle V-15                                     - Gunship 76/40 mm.
- Gunship 75/51 mm. 

Hall 1 Exhibition: A 2-storey building, built in 1972, exhibition area consists of;

Hall 1 floor 1, displays

- Honorable room of Admiral Prince Phra Borommawong Thoe Kromluang Chumphon Khet Udomsak.

- Honorable room of King Taksin the great

- Armament room

Hall 1 floor 2, displays

- Honorable room of Admiral of the fleet Somdej Phra Mahitaladhibes Adulyadejvikrom, the Prince Father 

- Honorable room of  Admiral of the fleet Chao Fha Paribatra Sukhumbhand, Prince of Nakhon Sawan

- Porcelain room

- The Navy Uniforms

- The room of Navy flags and flags used in the Navy.

- The room of former Commander-in-Chiefs of the Royal Thai Navy.

Hall 2 Exhibition: A 3-storey building, built in 1987. The exhibition area consists of;

Hall 2 floor 1, displays

- The first Lighthouse of Thailand        - Torpedo

- Super gun                                       - Mines

- Ancient Ships

Hall 2 floor 2, displays

Royal Barges

- Royal Barge Procession

- Important Royal Barges (Suphannahong, Anantanakkharat, Anekkachatphuchong, Narai Song Suban)

- Battle ship in Early Rattanakosin era 

-  Garuda at the bow
- Navigation tools and equipment for ships.

Hall 2 floor 3 (Special exhibition), displays important scene of Naval Battle and War of Navy during different periods.

- Naval Battle of Koh Chang

- Naval Battle Chao Phraya River on Rattankosin Year 112.

- The Greater East Asia War

- Korean War

- Operation Chamrak village at Trat province.
- Don Noi heroism at Nong Khai province.