How dangerous were Danish gunboats to a third rate?

Could Danish gunboats seriously threaten a British third rate in confined waters?

They could create a dangerous tactical situation in fjords, though British and Danish accounts disagree about how close they came to taking a ship.

A ship of the line could be put under pressure when many gunboats attacked from several directions in narrow water. Fjords restricted movement and let small craft exploit positions that would be harder to use at sea. British accounts tend to remember a difficult but manageable action, while Danish accounts give the gunboats a greater chance of taking the ship. Danish sources may overstate that likelihood. The tactical danger was real, but the competing accounts do not justify treating capture as an assured result.