Hand grenades against MTB?

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Hi,

War Diaries SKL
23 jule 1943
Nordsee
9th Motor Minesweeper Flotilla was attached "to convoy "1155" as far as Ymuiden, as additional protection. An attack by 12 enemy PT boats on convoy
1155 15 miles southwest of Ymuiden between 0054 and 0307, was repulsed by 9th Motor Minesweeper, Flotilla covering force and 1st Minesweeper Flotilla mine-field escort after a close combat in which hand grenades  also used. Several PT boats were set oh fire, three of them probably
destroyed. Motor minesweepers R "107", "103", and "87" were heavily damaged. Motor minesweeper "107" "was towed in. The other boats and the minesweeper M "37" suffered minor damage. Station ROM participated in the engagement. There was a short exchange of gunfire without damage to our motor minesweepers. The PT boats put up smoke screens and sheered off. From 0205 to 0240 in AN P 531, 6 PT boats attacked 34th Minesweeper Flotilla. Hits were observed on all the PT boats. One PT boat was set on fire and probably sank. The enemy sheered off after setting up smokescreens. At 0325, station ROM engaged 2 PT boats. Hits were observed. Casualties: 9th Motor Minesweeper Flotilla, 2 killed, 16 seriously and 5 slightly wounded; 1st Minesweeper Flotilla, 1 seriously and 4 slightly wounded; 34th Minesweeper Flotilla and 11th PT Boat Flotilla, 2 slightly wounded each.
According to Radio Intelligence, a British warship reported to Yarmouth at 0814: "I have MTB "222" in tow,"
Convoy "1155" anchored undamaged in the roads off Helder and resumed passage to the east at 2100

Colleagues,
Help me find out which German and British ships participated in the battle and which German ships fought with hand grenades (!).

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[Maarten]

Different date but there is mention about throwing a hand grenade
http://www.mtb718.co.uk/Ramming%20action.html

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 Thnk you, Maarten

I wanted to know how the Germans fought in the battle on  23 July 1943

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