Yes, Orlando Bloom's character is a great swordsman. But he also knows when to use a makeshift weapon, and he also knows how to use the smithy to his advantage. One can easily imagine a game where the following exchange occurs:
OB: OK, I know this smithy like the back of my hand. If Jack thinks he's going to escape, he's got another thing coming. Is there any way I can prevent him from going out the door, from where I am?
GM: You know where a pin would hold the door shut, but you'd have to be at the door to do it.
OB: What if I throw my sword?
GM: Not a standard useage, so your sword would become a makeshift, say, spear. And you don't have any ranks in Spear Throwing. Let's call it AC 15.
OB: That's okay, because I'm Skilled at Arms, I don't take a penalty, either. Can I gamble that I know well enough where I need to hit to increase my accuracy? I'm willing to try for a DC 20 Profession [Blacksmith] check, to increase my attack roll by +4.
GM: That sounds fair; roll 'em!
OB: (Rolls dice). 26! Dang. I should have gambled for another +2! (Rolls attack roll) A 10. But with my +4, and with my Dexterity bonus, I make it easily.
GM: Right. Jack can't get through the door. But, now, you have no weapon, as he is swift to point out. And, once again, you are between him and his way out.
OB: I look around. Can I reach the hot poker? Yes? Good. I grab it as a Reaction, using it as a makeshift sword to fight fully defensively, using my Fencing skill.
GM: The hot poker gives Jack a moment's pause....
OB: Good. Maybe I can Intimidate him with it.
GM: ......but he sighs, and grins, and comes at you with his sword. New round; roll initiative.
etc.
Watching that scene, there is no way that his knowledge of the smithy didn't directly contribute to the fight. Just as Jack's knowledge of ships directly contributed to their next fight, when he swung the boom and knocked Orlando Bloom off the deck. I'm fairly certain that this was intentional, or do you think that such a parallel came about by accident?
In any event, any rendition of the scene as game play, wherein the rendition is faithful to what happens on screen, is going to include a good many skill checks. Some of them should be Profession skill checks, IMHO, just as Jack Sparrow ("That's
Captain Jack Sparrow") makes use of his Profession [Sailor] to deal with Orlando Bloom once they have stolen a ship.
Profession skills (in 3.5) include "You know how to use the tools of your trade, how to perform the profession’s daily tasks, how to supervise helpers, and how to handle common problems." So long as a task involves common problems, daily tasks, or the tools of your profession, the skill is appropriate.
Craft specifically allows the creation of items.
To run a successful business should require both the Craft and Profession skills. Certainly, Orlando Bloom has both of these skills in PotC, whereas Captain Jack has only Profession AFAICT.
RC