ex-Radiant, a Thronycroft R-class destroyer. She was transferred to the Royal Thai Navy in 1920. She was well armed and maintained very high speed. For almost the entire service life she was the most powerful torpedo ship of the Thai Navy.
The maximum damage of Phra Ruang's 102mm HE and AP shells are same.
| Hit Points | 8700 |
| Plating | 6mm |
| Maximum Speed | 36 knots |
| Turning Radius | 450 m |
| Rudder shift time | 2.33 sec |
| Surface Detectability | 5.76 km |
| Aerial Detectability | 2.55 km |
| Consumable 1 |   |
| Consumable 2 |   (German DD) |
| Consumable 3 |   |
| 102mm QF MarkIV | |
| Layout | 3×1, A-P-X |
| Reload Time | 5 sec |
| 180° Rotation Time | 22.5 sec |
| Sector of Fire | A ±150°, PX 360° |
| Firing Range | 8.67 km |
| Maximum H-Dispersion | 80 m |
| σ | 2.0 |
| 102mm HE MarkIV | |
| Damage | 1500 |
| Muzzle Velocity | 664 m/s |
| Chance of Fire | 6% |
| 102mm AP MarkIV | |
| Damage | 1500 |
| Muzzle Velocity | 664 m/s |
| 533mm Twin | |
| Layout | 2×2 |
| Reload Time | 41 sec |
| Torpedo firing sector | 60° – 116° |
| 533mm Mark II DW | |
| Torpedo Damage | 10000 |
| Torpedo Speed | 52 knots |
| Torpedo Range | 5.0km |
| Detectability | 0.7 km |
| 40mm 2pdr. QF MkII | ||
| Layout | Average DPS | Firing Range |
| 3×1 | 17 | 2.5 km |
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Was the flooding of smoke?