M Maersk Sealand Majestic Cruises Malta Motorways of the Sea Maran Gas Maritime Marfret Marhina Portuguesa Marina Militare Marine Nationale Maritimas del Norte Marmaras Navigation Marnavi Marpetrol Medex Medfeed - UFS Mediterranea di Navegazione Mediterranea Pitiusa Mediterranean Shipping Company Medmar Melfi Marine Corp. Misc Malaysia Mitsu Osk Lines Moby Ferries Moormerland Schiffahrt Moran Tug Mundial RoRo Murmansk Shipping Company My Travel