No, they opened fire on Ft. Sumter. As Joe K told you Lincoln had ordered no first use of force.
Lincoln ordered that if they were "resisted" to use the entire force at their disposal to put both men and arms into fort Sumter. This despite the fact his generals had informed him it would take 20,000 men to take and hold Sumter.
Had those ships obeyed the orders they had been given, (but could not because the Powhatan command ship was sent to Florida without their knowledge) every ship would have been destroyed by the Confederate shore batteries.
Lincoln had sent those men to their deaths, except for the curious fact of the command ship not arriving, and the order to not do anything until it did arrive. (Which it never would.)
No, the Powhatan was busy in Pensacola, attempting to start the war there.