Denmark claimed to have won the Battle of Heligoland, though they were no longer able to enforce a blockade on the northern German ports. Tegetthoff himself claimed a draw, but he was promoted to rear admiral as a reward for his actions during the battle. The opinions of naval historians on the outcome of the battle are similarly mixed; Anthony Sokol, a historian of the Austrian Navy, states that "In spite of the damage they had sustained, the Austrians had won a strategic victory", citing the fact that the Danish blockade had been lifted. John Greene and Allesandro Massignani state that "Heligoland was Tegetthoff's day", though noting that Suenson could have won a victory had "Jylland" not been rendered unmaneuverable at the end of the action. On the other hand, David Zabecki affirms the argument that the battle "was a tactical Danish victory", while noting the lifting of the blockade. David Olivier described the battle as inconclusive, though also noted the end of the blockade.