Could American harbor defenses stop a British battle squadron?

Could American coastal defenses stop a squadron of first- or second-rate ships from raiding a harbor?

Some defenses existed, but if the war had continued Britain was preparing larger formations of ships of the line that could have made the contest far more dangerous.

American cities were not undefended, so a British attack would still have faced forts and local resistance. The balance changed as Britain released more first-, second-, and third-rate ships from the European war. A full squadron could concentrate far more firepower than the smaller forces already operating off the coast. If peace had not arrived when it did, the strategic trend would have continued to worsen for the United States.