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 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 | OneBofors 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)-classificationoffshore 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 | Onehelipad and hangar |
| Notes | Characteristics extracted from the2018 early projection and likely become subjects to be changed |
TheAso-class patrol vessel is a class of PL typepatrol vessel of theJapan Coast Guard. PL stands for Patrol vessel Large, and the class is named afterMount Aso, the largest activevolcano in Japan.
This class is one of the new patrol vessel classes to intercept spy boats ofDPRK. These classes are called "高速高機能大型巡視船",High-speed, high-functionality patrol vessel, large. HavingBofors 40 mm L/70autocannon withfire-control system, this class is safely able to deal with heavily armed spy boats ofDPRK which intrude into Japanese waters. The hull of this class isbulletproof 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 theLIDAR system to acquire targets with high accuracy. At the same time, this system enables them to performsearch and rescue missions more safely.
In 2020 there was signed an export deal betweenJapan andVietnam over 6 vessel for theVietnam Coast Guard (VCG), locally designated as the "TT-1500 patrol ship".[1][2]"TT" stands for "Tuần tra" means "Patrol", meanwhile the number "1500" stands for the class'sdisplacement of 1500 tons. According to pieces of information shared byVCG, TT-1500 has a slightly bigger size than the original Aso-class, and it is also equipped with ahelipad and the overall design is likely inspired from the successor designs such as theKunigami-class patrol vessel.
The TT-1500 will have a maximum speed of 24 knots, considerably slower than the original Aso, however it is projected to have a better low-speed stability hence making it better for low-intensity patrol and search-and-rescue missions.[3] The delivery for all 6 ships is expected to be completed by October 2026.[4]
| Pennant number | Ship name | Builder | Commission | Homeport |
|---|---|---|---|---|
| Japan Coast Guard (Aso-class) | ||||
| PL 41 | Aso | Mitsubishi Heavy Industries | 15 March 2005 | Fukuoka |
| PL 42 | Dewa | Universal Shipbuilding Corporation | 12 April 2006 | Akita |
| PL 43 | Hakusan | Kanazawa | ||
| Vietnam Coast Guard (TT-1500) | ||||
| CSB 8*** (1) | TBA | TBA | TBA | |
| CSB 8*** (2) | TBA | TBA | TBA | |
| CSB 8*** (3) | TBA | TBA | TBA | |
| CSB 8*** (4) | TBA | TBA | TBA | |
| CSB 8*** (5) | TBA | TBA | TBA | |
| CSB 8*** (6) | TBA | TBA | TBA | |
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