Battle of Fredrikshamn

Swedish coastal fleet was commanded by Gustav III. It consisted of 1 turuma, 1 pojama and 2 udema type archipelago frigates, 1 xebec, 18 galleys, 40 gun sloops (kanonslup), 30 gun yawls (kanonjolle), 9 cannon longboats (kanonbarkass) and 4 mortar longboats (mörsarbarkass).

Russian coastal naval unit was led by Pyotr Slizov. It consisted of 1 turuma type archipelago frigate (Sällan Värre), 1 galley, 10 half-galleys, 59 gun sloops and 2 gun prams Tiger and Leopard. In addition to the naval units the Russians had an artillery battery on the shore supporting them.

The battle started in the early morning of May 15, 1790 when the Swedish fleet approached Fredrikshamn. The Russian fleet at Fredrikshamn hastily scrambled and sailed to face them and a several-hour-long firefight commenced with devastating result for the Russians. The battle cost the Russians 26 ships sunk or captured including the turuma type archipelago frigate Sällan Värre that for the second time entered Swedish service after it originally had been captured by the Russians in the First battle of Svensksund. Defenders heaviest vessels were unable to navigate to the shallow waters in the bay and were easily captured by the attacker.

After the battle the Swedish ships entered Fredrikshamn harbor and demanded the commander of the town fortifications to surrender along with the remainder of the Russian fleet. Any surprise initiative the Swedes had after the battle was lost when Gustav III allowed the Russian commander request of an hour of respite to value the demands of surrender. When the attack on the town resumed later that day the garrison was reinforced and ready. Any further Swedish attacks proved fruitless and in the evening of May 15 the Swedish fleet withdrew back to Svensksund.