The Island-class patrol boat is a Bollinger-built 110-foot U.S. Coast Guard cutter design based on a Vosper Thornycroft patrol-boat lineage and later transferred to partner navies. Ukraine received ex-U.S. Coast Guard hulls through a transfer pipeline that began before the 2022 invasion; Sloviansk and Starobilsk entered Ukrainian service in Odesa in 2019, and Sloviansk was later reported sunk during reconnaissance and port-protection missions in the full-scale phase of the 2014 Russia-Ukraine War.
Ukraine received former U.S. Coast Guard Island-class boats for Black Sea maritime security; Sloviansk was reported sunk after a Russian air attack while conducting reconnaissance and port-protection missions in the Odesa region in March 2022.
Role detailsIsland-class armament changed across service lives and operators; public Coast Guard references identify both the original light-gun fit and later 25 mm/.50-caliber Coast Guard weapons.
| Carried item | Item type | Carriage evidence |
|---|---|---|
 | 25 mm automatic cannon | The Coast Guard handbook lists a Mk 38 25 mm cannon on Island-class cutters, and the BAE Systems Mk 38 Mod 3 sheet identifies the system's main gun as the 25 mm M242 Bushmaster. Sources: USCG Cutters Boats Aircraft Handbook 2015, BAE Mk 38 Mod 3 Fact Sheet |
 | Crew-served heavy machine gun | The Coast Guard handbook lists two .50-caliber machine guns in the Island-class weapons fit. |
The Coast Guard fact sheet says deliveries began in 1985, with the cutters built by Bollinger in Lockport, Louisiana.
Sources: USCG Island Class Patrol Boats Fact Sheet
The first two Ukrainian Island-class boats, former Coast Guard cutters Cushing and Drummond, were formally transferred at Coast Guard Yard in September 2018.
Sources: USCG SFLC Ukraine Support Newsletter
U.S. 6th Fleet reported that the former U.S. Coast Guard cutters entered Ukrainian Navy service at Odesa as Sloviansk and Starobilsk after a 10-week Coast Guard training program.
Sources: U.S. 6th Fleet Island-Class Transfer
The Coast Guard said Ukrainian sailors completed training for Kubrak, the former Coast Guard Cutter Kiska, and identified it as the fifth Island-class boat transferred to Ukraine.
Sources: USCG Cutter Transfer to Ukraine
Ukrainska Pravda and The Maritime Executive reported Sloviansk's loss after a Russian air attack while the patrol boat was conducting reconnaissance and port-protection missions in the Odesa region.
Sources: Ukrainska Pravda Slovyansk Sinking, Maritime Executive Sloviansk Loss
The Ukrainian Island-class group is best tracked by former U.S. Coast Guard hull identity and Ukrainian service name rather than by separate variant marks. Public Coast Guard reporting shows that not every transferred or allocated hull had the same delivery status after Russia's 2022 invasion.
| U.S. hull | Ukrainian name | Status in public sources |
|---|---|---|
| ex-Cushing | Sloviansk / P190 | Transferred with ex-Drummond, commissioned at Odesa in 2019, and reported lost in the Black Sea in March 2022. |
| ex-Drummond | Starobilsk / P191 | Transferred with ex-Cushing and commissioned into Ukrainian service at Odesa in November 2019. |
| ex-Ocracoke | Sumy | Prepared at Coast Guard Yard and shipped to Odesa with Fastiv in November 2021. |
| ex-Washington | Fastiv | Prepared at Coast Guard Yard and shipped to Odesa with Sumy in November 2021. |
| ex-Kiska | Kubrak | Identified by the Coast Guard as the fifth Ukrainian Island-class transfer; USCG logistics reporting says it remained in Baltimore caretaker status after the invasion. |
| ex-Edisto and ex-Nantucket | Not publicly identified here | USCG logistics reporting says two additional 110 WPBs were formally transferred in April 2022, but this page does not treat them as operational Ukrainian boats without separate public service-name and delivery sourcing. |
Sources: U.S. 6th Fleet Island-Class Transfer; USCG Cutter Transfer to Ukraine; USCG SFLC Ukraine Support Newsletter; Ukrainska Pravda Slovyansk Sinking.
