| Conflict: | Action of 16 May 1644 |
| Partof: | the Torstenson War |
| Caption: | Christian IV, Pieter Isaacsz |
| Date: | 16 May 1644 |
| Place: | Off Jylland, Baltic Sea |
| Result: | Dano-Norwegian victory |
| Combatant2: | Swedish Empire |
| Combatant1: | Denmark-Norway |
| Commander2: | Maerten Thijssen |
| Commander1: | Christian IV |
| Strength2: | 26 Merchantmen |
| Strength1: | 9 warships |
| Casualties2: | 500 killed and wounded |
| Casualties1: | 11 killed and wounded |
This battle took place on 16 May 1644 during the Danish-Swedish War near List Deep, between Sylt and Rømø in western Denmark. Nine Danish ships under King Christian IV forced a retreat back into List Deep of 26 smaller Dutch ships (13 under Marten Thijsen and 13 under Hendrik Gerritsen) which had been leased to Sweden.[1] 4 more Dutch ships from Marcus' squadron appeared during the battle but took no part.
Trefoldighed 48
Tre Løver 46
Lindorm 38
Norske Løve 30
Neptunus 28
Sorte Rytter 24
Phenix 20
Postillion 14
Hollandske Fregat 12
Gulde Swaen (flag)
Grooten Dolphien (2nd flag of Gerritsen)
Lange Bark
10 others plus 4 under Marcus