| Business | Phone |
| Chance John E & Assoc Engnrs 6100 Hillcroft St, Houston 77081 | (713) 773-5670 |
| Diers & Assoc Inc 800 Wilcrest Dr 260, Houston 77042 | (713) 782-5445 |
| Louisiana International Marine 2300 Mccue Rd, Houston 77056 | (713) 552-1616 |
| Kirby Inland Marine Lp 55 Waugh Dr 1000, Houston 77007 | (713) 868-1661 |
| Gantt Marine Svc Inc Houston 77011 | (713) 921-3333 |
| Sea Technology 2000 Wayside Dr, Houston 77011 | (713) 928-2204 |
| Vessel Repair 3502 Broadway St, Houston 77017 | (713) 644-1598 |
| Bisso Marine Co 11903 Sm 529, Houston 77041 | (713) 937-0300 |
| Diers & Assoc Inc 3000 Wilcrest Dr, Houston 77042 | (713) 782-9949 |
| Sumbersible Consulting 10138 Eddystone Dr, Houston 77043 | (713) 722-7876 |
| Proteus Power Co Inc 2656 South Loop W 240, Houston 77054 | (713) 668-2100 |
| T Baker Smith & Son Inc Houston 77057 | (713) 784-2943 |
| Princeton Sovereign Maritime 3903 Princeton Park Ct, Houston 77058 | (281) 218-6548 |
| Petromar International 350 N Sam Houston Pkwy E 104, Houston 77060 | (281) 931-7600 |
| Scan Trans Inc 2500 Tanglewilde St, Houston 77063 | (713) 400-7447 |
| Unimar Inc 1720 Federal Rd, Houston 77015 | (713) 451-6000 |
| World Marine Assoc Inc 13301 East Fwy 201, Houston 77015 | (713) 453-3131 |
| Suderman & Young Towing Co 2777 Allen Pkwy 900, Houston 77019 | (713) 529-9944 |
| Seatran Inc 2309 Dorrington St, Houston 77030 | (713) 660-6662 |
| R Xpress 12102 Almeda Rd, Houston 77045 | (713) 433-6655 |
| Trico Marine Operators Inc 2401 Fountain View Dr 920, Houston 77057 | (713) 780-9926 |
| Sabine Surveyors Inc 18333 Egret Bay Blvd 160, Houston 77058 | (281) 333-2794 |
| Smit International Americas 400 S Sam Houston Pkwy E, Houston 77060 | (281) 931-2150 |
| Oil Inspections Usa Inc 16626 Sea Lark Rd, Houston 77062 | (281) 488-8777 |
| Omi Corp 3700 Buffalo Speedway 1010, Houston 77098 | (713) 664-0576 |