On 5 September 1997, Iris-class 180-foot buoy tender USCGC Bittersweet (WLB-389) was transferred to Estonia as 'Valvas' (PVL-109), and is now a museum ship in Tallinn, Estonia.
On 5 September 1997, Iris-class 180-foot buoy tender USCGC Bittersweet (WLB-389) was transferred to Estonia as 'Valvas' (PVL-109), and is now a museum ship in Tallinn, Estonia.