Converts o-succinylbenzoyl-CoA (OSB-CoA) to 1,4-dihydroxy-2-naphthoyl-CoA (DHNA-CoA). 2-succinylbenzoyl-CoA + H(+) = 1,4-dihydroxy-2-naphthoyl-CoA + H2O The hydrogencarbonate anion plays the same catalytic role (proton acceptor) as the side-chain carboxylate group of the essential 'Asp-185' found in actinobacteria, archaea, bacteroidetes, and deltaproteobacteria. Quinol/quinone metabolism; 1,4-dihydroxy-2-naphthoate biosynthesis; 1,4-dihydroxy-2-naphthoate from chorismate: step 6/7. Quinol/quinone metabolism; menaquinone biosynthesis. Belongs to the enoyl-CoA hydratase/isomerase family. MenB subfamily.