Type 625 Hai Yang Class (Seismological Research Ship)
| Pennant # | Builder | Laid down | Launch | Commission | Status | Fleet |
| Type 625A | ||||||
|---|---|---|---|---|---|---|
| Ocean 1 | Hudong-Zhonghua Shipyard | 01 Apr 1971 | 02 Feb 1972 | 30 Nov 1972 | 2019 : Active | |
| Ocean 2 | Hudong-Zhonghua Shipyard | ? | ? | ? | 2019 : Active | |
| Ocean 4 | Hudong-Zhonghua Shipyard | ? | ? | ? | 2019 : Active | |
| Type 625B | ||||||
| Ocean 4 | Hudong-Zhonghua Shipyard | ? | ? | Oct 1980 | Active | |
| Type 625C | ||||||
| Ocean 11 | Hudong-Zhonghua Shipyard | Sep 1980 | Jun 1981 | 24 Nov 1981 | 2019 : Active | |
| Ocean 12 | Hudong-Zhonghua Shipyard | Sep 1980 | Jul 1981 | 24 Nov 1981 | 2019 : Active | |
| Kexue-1 Science 1 | Hudong-Zhonghua Shipyard | 04 Dec 1979 | 19 Jan 1981 | ? | 2016 : retired | |
| Shiyan-3 Practice 3 | Hudong-Zhonghua Shipyard | ? | ? | ? | 2019 : Active | |
| Specifications | ||
|---|---|---|
| Type | Type 625A/B | |
| Name | Haiyang 01-04 | |
| Builder | ||
| Displacement, full | 4,500 tons | |
| Displacement, standard (t) | 3324 tons | |
| Gross tonnage | 2608 tons | |
| NRT | 782 t | |
| Length | 341 ft (104-104.27 meters) | 104 meters |
| Length between perpendiculars (m) | 58 | |
| Beam | 45 ft (13.74-14 meters) | |
| molded Depth (m) | 7.8 | |
| most significant Height (m) | 27.5 | |
| Draft | 16 ft ( 4.95 - 5 meters) | 4.9 meters |
| Propulsion | ||
| maximum Speed | 21 kts | 19 knots |
| Cruise speed (kn) | 15 | 15 knots |
| minimum speed | 4.5 knots | |
| Range (nmi) | 8000 Sea miles | |
| Armament | none fitted | |
| Crew Accommodation | 150 | 38 crew + 63 scientists |
