At the beginning of August, Germans were still laying mines in the Irben Straits.
On 1 August, Soviet motor torpedo boats attempted an attack, covered by two destroyers, against S-boats off Cape Domesnas but they only lost the motor torpedo boat TK-122 in the process.
Between 6 and 8 August, the destroyers Surovy and Statny shelled German coastal artillery batteries in the Moon Sound.
On 17 August however, four Soviet motor torpedo boats attacked off Cape Domesnas again; and during the engagement the German minesweeper M-1707 Lunenburg was first shelled by Soviet ground artillery and then strayed into mines and sank.

Three days laters Germans retaliated when S-58 torpedoed and sank the Soviet minesweeper T-51 Pirmunas in the Moon Sound.
The final Soviet destroyer action occurred on 21 August when the destroyers Artyom and Surovy made an unsuccessful attack against a convoy: they managed to force the only escort unit, the auxiliary gunboat SAT-1 Ost, to run aground (later recovered) but this prevented damages to the convoy.
At the beginning of August, Germans were still laying mines in the Irben Straits. On 1 August, Soviet motor torpedo boats attempted an attack, covered by two destroyers, against S-boats off Cape Domesnas but they only lost the motor torpedo boat TK-122 in the process. Between 6 and 8 August, the destroyers Surovy and Statny shelled German coastal artillery batteries in the Moon Sound. On 17 August however, four Soviet motor torpedo boats attacked off Cape Domesnas again; and during the engagement the German minesweeper M-1707 Lunenburg was first shelled by Soviet ground artillery and then strayed into mines and sank.
Three days laters Germans retaliated when S-58 torpedoed and sank the Soviet minesweeper T-51 Pirmunas in the Moon Sound. The final Soviet destroyer action occurred on 21 August when the destroyers Artyom and Surovy made an unsuccessful attack against a convoy: they managed to force the only escort unit, the auxiliary gunboat SAT-1 Ost, to run aground (later recovered) but this prevented damages to the convoy.
Gulf of Riga campaign