JamesonCourage
Adventurer
SRD said:Profession (Wis; Trained Only)
Like Craft, Knowledge, and Perform, Profession is actually a number of separate skills. You could have several Profession skills, each with its own ranks, each purchased as a separate skill. While a Craft skill represents ability in creating or making an item, a Profession skill represents an aptitude in a vocation requiring a broader range of less specific knowledge.
Check
You can practice your trade and make a decent living, earning about half your Profession check result in gold pieces per week of dedicated work. 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.
Player's Handbook said:Profession (Wis; Trained Only)
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. For example, sailor knows how to tie several basic knots, how to tend and repair sails, and how to stand a deck at sea. The DM sets DCs for specialized tasks.
Looks like, by the rules, you can use Profession for basic trade related things. If you can repair sails, I'd venture a guess that you can read some naval charts with it as well. In fact, the last sentence I quoted seems like it would fall into the "specialized tasks" portion.
But, by all means, continue to play how you like, even if it's not RAW. I certainly don't play by RAW. If you want to nerf the Profession skill for being overpowered, more power to you. Play what you like
