| 541 | Marine Communication & Navigation Equipment | Company Product |
| 542 | Marine Compasses | Company Product |
| 543 | Marine Composite Panel | Company Product |
| 544 | Marine Connectors | Company Product |
| 545 | Marine Consultants | Company Product |
| 546 | Marine Contractors | Company Product |
| 547 | Marine Controls | Company Product |
| 548 | Marine Coolers | Company Product |
| 549 | Marine Cord Sets | Company Product |
| 550 | Marine Coveralls | Company Product |
| 551 | Marine Cranes | Company Product |
| 552 | Marine Curtain | Company Product |
| 553 | Marine D Fenders | Company Product |
| 554 | Marine Diesel Engine Pumps | Company Product |
| 555 | Marine Diesel Engines | Company Product |
| 556 | Marine Diesel Motor Oil | Company Product |
| 557 | Marine Distress Signals | Company Product |
| 558 | Marine Dock Fenders | Company Product |
| 559 | Marine Doors | Company Product |
| 560 | Marine Duct Cleaning | Company Product |
| 561 | Marine Electric Motors | Company Product |
| 562 | Marine Electrical | Company Product |
| 563 | Marine Electrical Contractors | Company Product |
| 564 | Marine Electrical Switchboards | Company Product |
| 565 | Marine Electrical Tapes | Company Product |
| 566 | Marine Electrical Wire Management | Company Product |
| 567 | Marine Electronic Equipment & Supplies | Company Product |
| 568 | Marine Engine | Company Product |
| 569 | Marine Engine Coolant | Company Product |
| 570 | Marine Engine Cooling Pumps | Company Product |