| 541 | Marine Doors | Company Product |
| 542 | Marine Duct Cleaning | Company Product |
| 543 | Marine Electric Motors | Company Product |
| 544 | Marine Electrical | Company Product |
| 545 | Marine Electrical Contractors | Company Product |
| 546 | Marine Electrical Switchboards | Company Product |
| 547 | Marine Electrical Tapes | Company Product |
| 548 | Marine Electrical Wire Management | Company Product |
| 549 | Marine Electronic Equipment & Supplies | Company Product |
| 550 | Marine Engine | Company Product |
| 551 | Marine Engine Coolant | Company Product |
| 552 | Marine Engine Cooling Pumps | Company Product |
| 553 | Marine Engine Parts | Company Product |
| 554 | Marine Engine Pump Repair | Company Product |
| 555 | Marine Engine Servicing | Company Product |
| 556 | Marine Engine Transmission Oil | Company Product |
| 557 | Marine Engineering | Company Product |
| 558 | Marine Engineers | Company Product |
| 559 | Marine Engines | Company Product |
| 560 | Marine Epoxy Flooring | Company Product |
| 561 | Marine Equipment | Company Product |
| 562 | Marine Equipment & Supplies | Company Product |
| 563 | Marine Fans | Company Product |
| 564 | Marine Fenders | Company Product |
| 565 | Marine Filters | Company Product |
| 566 | Marine Flashing Lights | Company Product |
| 567 | Marine Floats | Company Product |
| 568 | Marine Flooring | Company Product |
| 569 | Marine Flowmeters | Company Product |
| 570 | Marine Flue Gas Plants | Company Product |