OCHAMCHIRE (P-23) class

2 OCHAMCHIRE-class PATROL BOAT (WPB) (U.S. ISLAND class)
Name          Pendant No.   Commissioned     Status
OCHAMCHIRE    P-23          April 17, 1991   Active 
   (ex-U.S. JEFFERSON ISLAND, WPB-1340)
DIOSKURIA     P-25          Nov. 22, 1991    Active
   (ex-U.S. STATEN ISLAND, WPB-1345)

The OCHAMCHIRE class is a pair of ex-U.S ISLAND class patrol boats in service with the Georgian coast guard.

HULL: Like the ISLAND class, these ships are designed from the Vesper Thorncroft 110-ft patrol boat build. It has increased top-hamper with a flush-deck, round-bilge hull with some bow sheer, a low bow coaming, active fin stabilizers and a transom stern. The deckhouse levels are stepped in a wedding-cake profile; the pilothouse has an open bridge abaft it. A tall, quadrapod mast is positioned abaft the bridge.
At full load these ships displace 150 tons. The class has a length of 109 ft 11 in (33.5 m), a beam of 21 ft 0 in (6.4 m) and a maximum draft of 7 ft 3 in (2.2 m).
The full crew complement is 16, consisting of two officers and 14 enlisted personnel.

ENGINEERING: Two Caterpillar 3516 Diesel engines produced 5,673 bhp, driving two shafts. The ships have a top speed of 29 knots. At 10 knots, the ships can reach a maximum range of 3,928 nm (7,275 km).

ARMAMENT: A 25-mm Mk 38 machine gun system incorporating an M242 Bushmaster chain gun is the ships' primary armament. Two 12.7-mm machine guns provide added protection to the class.

SENSORS/ELECTRONICS: These ships are outfitted with an AN/SPS-73 navigation radar operating in the I-band. An SCCS-Lite sonar is equipped.

In service.

The U.S. Coast Guard decommissioned the ISLAND-class patrol boats JEFFERSON ISLAND and STATEN ISLAND in October 2014. The ships were transferred to the Georgian coast guard through the Excess Defense Articles (EDA) program on Sept. 30, 2016 at a ceremony in Baltimore, Md.

The vessels were refitted at Baltimore and delivered to Georgia on Oct. 18, 2018 at a ceremony in the Black Sea port of Poti.

Bollinger Shipyard, Lockport, La.

 Crew
   Total                  16 (2 off. + 14 enl.)

 DISPLACEMENT
   Full load              150

 DIMENSIONS
   Length                 109 ft 11 in (33.5 m)
   Beam                    21 ft  0 in ( 6.4 m)
   Draft                    7 ft  3 in ( 2.2 m) maximum

 PROPULSION
   Main                   2 x Caterpillar 3516 diesels
      power               5,673 total bhp; 2 shafts

 PERFORMANCE
   Speed                  29 knots
   Range                  3,928 nm (7,275 km) at 10 knots

 COMBAT SYSTEMS
   Guns                   1 x 25-mm Mk 38
                          2 x 12.7-mm machine guns
   Radars                 1 x AN/SPS-73 navigation
   Sonar                  1 x SCCS-Lite

DIOSKURIA was involved in the NATO combined maritime exercises Sea Breeze 2020 in the Black Sea in July 2020.

Both the OCHAMCHIRE and DIOSKURIA participated in joint training with the U.S. Coast Guard BERTHOLF-class cutter HAMILTON in May 2021. Training took place in the Black Sea, and included search and rescue, survivor rescue, helicopter hoisting evolutions, towing approaches and communications drills.

The DIOSKURIA took part in a naval parade in Odessa for the 30th anniversary of Ukraine’s independence, along with other international vessels.

Ex-Island class.