Shops in Texas?

Please, can somebody help me about.... I'm a seaman and my ship usually comes in few ports in Texas- Pasadena, Freeport, Point Comfort and sometimes in Tampa Florida. Every time when I decide to go ashore and buy (find) some parts for my XJ, I loose lot of valuable time to find a good shop and always I need to go back on a ship without things I was looking for. Does anybody knows any web page or name of shop somewhere there so I can order some parts through my ship's agency? I will appreciate any help, especially if someoneon this group lives in this area. In about one week I'm leaving on a ship and probably will join the vessel in Freeport (TX). Thanks everyone on advices so far, especially to Mr. L.W.Bill Hughes, Mike Romain, Doug W, Lee Ayrton, ... thanks guys. Many greetings from Croatia. Davey