I read a couple of these books in the nineties, similar Napoleonic/Hornblower space navy set up to the Seafort Saga.
'Ships of the Wall' was an expression used and, like in the Seafort books, floggings are commonplace.
Not Honor Harrington, they had a male protagonist. I think there may have been a rebellion or mutiny just as an unfriendly alien fleet arrived in human space.