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Diving support vessel
YDT-01-class diving support vessel is a diving support vessel. It was built by Yokohama Yacht Company , Yokohama Maehata Shipbuilding , Nagasaki.
YDT-01-class diving support vessel
Yamada Taro · CC BY-SA 4.0 · Resized · CC BY-SA 4.0 · Source ↗ · ModifiedTechnical data
True scale
Sourced dimensions beside a 1.75 m human reference.
Points represent sourced observations, including revisions. Revisions on the same effective date are not separate inventory events. Ranges appear in the table and are not plotted as exact points.
| Observation / report period | Value | Source | Claim state |
|---|---|---|---|
| 28 Sept 2026 | 37.5 m | Wikipedia contributors | superseded |
YDT-01
Yokohama Yacht Company , Yokohama Maehata Shipbuilding , Nagasaki
1999-2002
2000-present
6
6
6
Diving support vessel
240 t (240 long tons ) standard 260 t (260 long tons ) full load
37.5 m (123 ft 0 in )
6.8 m (22 ft 4 in)
2.1 m (6 ft 11 in)
3.7 m (12 ft 2 in)
2 × diesel electric engines 2 × shafts
14 kn (26 km/h; 16 mph)
33
AN/SPS-10 surface-search radar AN/UQS-1D sonar
1 × single Oerlikon 20mm gun
Reference text from Wikipedia contributors, used under CC BY-SA 4.0.
YDT-01-class diving support vessel equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.
JapanReported count for YDT-01 -class. Service scope: Japan Maritime Self-Defense Force ships; does not replace a national total. 1 distinct count cell(s) from the same source list; shared rowspan cells counted once. Excludes retired/reserve/on-order rows. Count column(s): in service: 6. Origin: unstated. The listed variants/roles are the scope, not an immediately deployable count. The components do not establish one inventory census date; the stored date is the retrieved source snapshot.