 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (February 2013) |
 Aso (PL 41)
| |
| Class overview | |
|---|---|
| Name | Aso class |
| Builders | Mitsubishi Heavy Industries, Universal Shipbuilding Corporation |
| Operators |  Japan Coast Guard |
| Preceded by | Ojika class |
| Succeeded by | Hateruma class |
| Subclasses | TT-1500 design |
| Built | 2002–2006 |
| In commission | 2005–present |
| Planned | 3 |
| Completed | 3 |
| Active | 3 |
| General characteristics (Aso class) | |
| Type | 1,000 ton-class PL (Patrol vessel, Large) |
| Tonnage | 770 GT |
| Length | 79.0 m (259 ft 2 in) |
| Beam | 10.0 m (32 ft 10 in) |
| Depth | 6 m (19 ft 8 in) |
| Propulsion |
|
| Speed | 30+ knots |
| Complement | 30 |
| Armament | One Bofors 40 mm L/70 gun with optical FCS |
| Armour | Ballistic protection over certain areas |
| Class overview | |
| Name | TT-1500 patrol vessel |
| Builders | TBA |
| Operators |  Vietnam Coast Guard |
| Preceded by |  Han River-class vessel |
| Cost | USD $398,430,000 for six vessels |
| Built | Jul. 2020 - Oct. 2026 (planned) |
| Planned | 6 |
| On order | 6 |
| Completed | 0 |
| Active | 0 |
| General characteristics (TT-1500) | |
| Type | General-purpose TT (tuần tra)-classification offshore patrol vessels |
| Displacement | 1,500 ton |
| Length | 79.0 m (259 ft 2 in) |
| Beam | 11.0 m (36 ft 1 in) |
| Height | 6.8 m (22 ft 4 in) (freeboard) |
| Draught | 3.3 m (10 ft 10 in) |
| Speed | 24 knots (44 km/h; 28 mph) |
| Range | 4,000 nautical miles (4,600 mi; 7,400 km) |
| Armament |
|
| Aviation facilities | One helipad and hangar |
| Notes | Characteristics extracted from the 2018 early projection and likely become subjects to be changed |
The Aso-class patrol vessel is a class of PL type patrol vessel of the Japan Coast Guard. PL stands for Patrol vessel Large, and the class is named after Mount Aso, the largest active volcano in Japan.
This class is one of the new patrol vessel classes to intercept spy boats of DPRK. These classes are called "高速高機能大型巡視船", High-speed, high-functionality patrol vessel, large. Having Bofors 40 mm L/70 autocannon with fire-control system, this class is safely able to deal with heavily armed spy boats of DPRK which intrude into Japanese waters. The hull of this class is bulletproof in case of close-range firefights.
In the back of the bridge's side, this class has display devices that can be used to instruct other ships to stop even at nighttime. And on the bridge superstructure, this class is equipped with the LIDAR system to acquire targets with high accuracy. At the same time, this system enables them to perform search and rescue missions more safely.