LKU (Lekki Kuter Uzbrojony - Light Armed Craft) and*
KU (Kuter Uzbrojony - Armed Craft) were armed craft*
of several types used by Polish riverine Pinsk *
Flotilla and its Vistula River Detachment.*
*
They were usually armed with a 37mm L/21 SA-18 tank*
gun (LKU) or 37mm naval gun (KU) and 7.92mm MG*
*
The craft of Pinsk Flotilla were scuttled after the*
Soviet invasion on 17 September 1939, but several*
craft of Vistula River Detachment fought against*
Germans: KU-4, KU-5 (pictured) and KU-6 (MG-armed*
only).*
*
_____________[description by PIBWL]*