Battle of Rosemère

Battle of Rosemère
	Part of the Battle of Tarth, Winter War
	; 28 Eskader Gevechtsschepen manoeuvring in the Gulf of Silesia
Date	19 December 2016
Location	Gulf of Silesia, Halkeginian Sea
Result	Atmoran strategic victory Royal Atmoran Navy naval dominance in the Halkeginian Sea.; Royal Vozhan Navy reduced to a fleet in being.; Vozhan National Army captures the Isles of Tarth.;
Belligerents
Atmora; Mizuho	Vozh
Commanders and leaders
Sjef Northeimer; Bernard van Messchendorp; Saimori Katsurō;	Artsiom Hilevich; Valeriy Jaŭhienaŭ;
Units involved
Halkeginian Fleet Strijdgroep H; ; Royal Atmoran Air Force	Ruthenian Fleet
Strength
1 fleet carrier; 2 cruisers; 6 destroyers; 10 frigates; 126 naval aircraft; 36 land-based aircraft;	2 battlecruisers; 4 cruisers; 6 destroyers; 12 frigates; 28 naval helicopters; 84 land-based fixed-wing aircraft;
Casualties and losses
2 frigates damaged; 1 frigate sunk; 6 aircraft shot down; 67 dead; 129 wounded;	1 battlecruiser damaged; 1 cruiser damaged; 2 destroyers damaged; 3 frigates sunk; 27 aircraft shot down;

The Battle of Rosemère was a naval battle off the coast of the Isles of Tarth in the Gulf of Silesia and the only major fleet action in the Winter War. With the Vozhan National Army (VNA) invading Tarth on 16 December 2016, the Atmoran 49th Brigade defending the isles were besieged by the VNA for three days. To relieve the 49th, Admiral Eelco H. Zernitz devised a plan to send a naval task force (Strijdgroep H) under Vice Admiral Sjef Northeimer to the isles.

Schout-bij-nacht Bernard van Messchendorp
- One aircraft carrier: HMS Gallië
- Two guided-missile cruisers: HMS Prins Leopold and HMS Koning Frederik IV
- Six guided-missile destroyers: HMS Vergulde Zon, HMS Groote Liefde, HMS Voorzichtigheid, HMS Schorpioen, HMS Tigchelhoff, and HMS De Ridder
- Four guided-missile frigates: HMS Gasselte, HMS Gelrode, HMS Martelange, and HMS Karthspire
Rear Admiral Saimori Katsurō
- Six guided-missile frigates: HMMS Yūkaze, HMMS Yūgiri, HMMS Nadakaze, HMMS Akebono, HMMS Shiranui, and HMMS Yūdachi

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