A
- A-Ships Management
- Adria Ferries
- Adriatica
- Aegean Cargo
- Aegean Speed/Sea Lines
- Africa Marocco Link
- Agapitos Express Ferries
- Agapitos Lines
- Agoudimos Lines
- Alaska Marine Highway System
- Algerie Ferries
- Aletehad Line
- Alicost
- Alilauro
- Alimar – Rodriquez S.p.A.
- AIDA Cruises
- Ainaftis
- Alslinjen
- Ambassador Cruise Line
- Anek Lines
- Anen Lines
- Anez Lines
- AnRussTrans
- Aquavision
- Arab Bridge Marittime
- Arkadia Lines
- Armamento Sardo
B
- B&I Line
- Baja Ferries
- Balearia
- Baltic Line
- Bastø Fosen
- Bay Ferries
- BC Ferries
- Blue Ferries
- Blue Line
- Blue Star Ferries
- Bluferries
- Blunavy
- Blujet
- Boreal Sjø
- Bornoholmslinjen
- BotniaLink
- British Channel Island Ferries
- British Railways
- Brittany Ferries
- Buquebus
C
- C-Bed Floating Hotels
- Caledonian MacBrayne Ferries
- Canary Bridge Seaways
- Capitan Morgan
- Carboflotta S.p.A.
- Caremar
- Carnival Cruise Line
- Caronte & Tourist
- Celebrity Cruises
- Celestyal Cruises
- Cenk Group
- C.G.T.M.
- Chandris Line
- CITRA – Compagnia Italiana transatlantica
- Cldn RoRo
- CO.GE.DAR. Compagnia Genovese d’Armamento (1946 – 1970 )
- CO.RIM.A. Compagnia Rimorchiatori Ancona S.r.l.
- Color Line
- Comanav
- Comarit
- Condor Ferries
- Conferry
- Corsica Ferries – Sardinia Ferries
- Corsica Linea
- Compagnie Européenne de Transport Automobile par Mer (CETAM)
- Consorzio Liguria Via Mare
- Costa Crociere
- Cotunav
- Crystal Cruises
- C.T.M.A.
- Cunard Line
D
- D’Alesio
- D’Amico Group
- Dane Sea Line
- Da-No Linjen
- Delcomar
- Delfino Verde Navigazione Srl
- Destination Gotland
- DFDS
- Dimaio Lines
- Disney Cruise Line
E
- Eckerö Line
- Eckerö Linjen
- Efthymiades Lines
- El Salam Shipping
- Elettra TLC
- Endeavour Lines
- Enermar
- Eolie Savadori
- Ernst Russ
- Euroferrys
- Eurolink (1994-1996)
- European Ferries
- European Seaways (1990-2019)
- Euroway (1992-1994)
F
- Fanølinjen
- Far Eastern Shipping Company
- Fast Ferries
- Ferrimaroc
- Ferrovie dello Stato
- Ferryways (2000-2007)
- Finaval S.p.A.
- Finncarriers (1969-2010)
- Finnlines
- Finska Ångfartygs Ab (FÅÅ)
- Five Star Lines (1998-2001)
- Fjord Line
- Flota Suardiaz
- Fraglines (1950-2007)
- Fratelli Neri S.p.A.
- Fred.Olsen Lines
- Fred.Olsen Express
- FRS
- Färöarnas Landskapsstyrelse
G
- G.A. Ferries (1988-2011)
- G.N.M.T. (1974-2006)
- Gestione Navigazione Laghi
- Gestour
- Go in Sardinia (2012-2014)
- Golden Star Ferries
- Golfo Paradiso – Trasporti Marittimi Turistici
- Gotlandslinjen
- Goutos Lines
- Gozo Channel Line
- Grandi Navi Veloci
- Grenaa-Hundested Linien A/S (1934-1996)
- Grendi Trasporti Marittimi (Gruppo Grendi)
- Grimaldi Deep Sea
- Grimaldi Euromed S.p.A.
- Grimaldi Holding
- Grimaldi Trasmed
- GT-Link (1987-1996)
H
- Halkydon Ilion Lines
- Hapag Lloyd
- Happy Lines (1998-2002)
- Hellas Ferries (1999-2005)
- Hellas Syria Line (1978-1986)
- Hellenic Mediterranean Lines
- Hellenic Seaways
- Holland America Line
- Hoverspeed
- Hurtigruten
I
- Ibero Cruceros
- Ichnusa Lines
- Ignazio Messina
- Ilva Servizi Marittimi
- imtc (1988-2013)
- Inter Shipping
- Interislander
- Irish Ferries
- Ippocampo
- Iscomar
- Isle of Man Steam Packet Company
- Italia di Navigazione
- Italnavi
J
- Jadrolinija
- Jahre Line (1939-1991)
- Johnson Line Ab
- Juelsminde-Kalundborg Linien
K
- Kallisti Ferries
- Karageorgis Line (1971-1995)
- Kastrup-Malmö Linien
- Kavoudines Lines
- Kefalonian Lines
- Kerkyra Lines
- Kerkyra Seaways
- Kystlink
L
- La Meridionale
- La Veloce
- Labrador Marine
- Lane Sea Line
- Lakeway Link
- Langelandslinjen
- Larvik Line
- Laziomar
- Levante Ferries
- Levantina Trasporti
- LD Lines (2005-2014)
- Liberty Lines
- Limadet
- Linee Canguro S.p.A.
- Linee Marittime dell’Adriatico
- Linda Line
- Linjebuss (1955-1980)
- Lion Ferry
- Lisco/ Lithuanian Shipping Company
- Lloyd Italiano
- Lloyd Sabaudo
- Lloyd Sardegna
- Lloyd Triestino
- Lolland Færgefart
- Louis Cruise Line
M
- Maddalena Lines
- Maregiglio
- Marfret
- Marine Atlantic
- Maritime Way (2002-2006)
- Marlines (1982-2014)
- Marnavi
- Matacena Lines
- Mediterranea Pitiusa
- Med Link Ferries
- Medmar
- Medtug
- Mercandia
- Merchant Ferries
- Meridiano Lines
- Merzario Lines
- Micoperi
- Minoan Lines
- Moby S.p.A.
- Moltzau Line
- Montanari Navigazione S.p.A.
- Montenegro Lines
- Mols Linjen
- MSC Crociere
- MSC Cargo
- MSC Traghetti
N
- N.L. Adriatica
- Namma Shipping Lines
- Naviera Armas
- Navigazione Generale Italiana
- Navigazione Golfo dei Poeti
- Navigazione Libera del Golfo
- Navigazione Toscana
- Navisarma
- NEL Lines
- Neptune Lines
- Nomicos Lines
- Nordö Link
- Norled
- Norfolkline
- Normandy Ferries
- Norse Irish Ferries
- Norse Merchant Ferries
- Northlink Ferries
- North Sea Ferries
- Norway Line
- Norwegian America Line
- Norwegian Cruise Line
- Nova Ferries
O
- Oceania Cruises
- Olau Line (1974-1994)
- Olympic Ferries (1993-1994)
- Öresundsbolaget
- Øresundslinjen
- Oromare S.p.A.
P
- P&O Australia
- P&O Cruises
- P&O Ferries
- P&O Scottish Ferries
- Phoenix Reisen
- Polferries
- Polish Ocean Lines
- Poseidon Lines
- Princess Cruises
- Prinzen Line
- Provinciale Stoombootdiensten in Zeeland (P.S.D.)
- Prysmian Group
- Puglia Navigazione S.r.l.
- Pullmantur
R
- Raffaello di Navigazione
- Red Funnel
- Rederi Ab Nordö
- Regie Voor Matitiem Transports (R.M.T.)
- Rete Ferroviaria Italiana
- Rimorchiatori Laziali
- Rimorchiatori Napoletani
- Rimorchiatori Riuniti
- Rimorchiatori Riuniti Panfido
- Rimorchiatori Riuniti Spezzini
- Rimorchiatori Sardi (Moby Tugs)
- Royal Caribbean
- Royal Olympic Cruises
- Royal Viking Line
S
- S.P.A.N. – Società Partenopea Anonima di Navigazione (1925-1975)
- Saaremaa Laevakompanii
- Saga Cruises
- Saga Linjen
- Salamis Lines
- Sally Line
- Samsølinjen
- San Cataldo S.p.A.
- Sancak Line
- Saos Ferries
- Sardegna Elba di Navigazione S.p.A.
- Saremar (1987-2016)
- Saronic Ferries
- Scafi – Società di navigazione S.p.A.
- Scandlines
- Scandro Holding
- Sea Containers
- Seabourn Cruises
- SeaEscape
- Seafrance
- Sealink British Ferries
- SeaRoad
- Seatruck Ferries
- Seawind Line
- Seajets
- Sessan Linjen
- Setramar
- Si.Re.Na. – Sicula regionale di navigazione
- Siciliana Salvataggi S.p.A.
- Sicula Oceanica (1955-1999)
- Sidarma (Società Italiana di Armamento)
- Silja Line
- Silversea Cruises
- Siremar
- Sitmar – Società Italiana di Servizi Marittimi
- Sitmar Line
- Skandinavisk Linjetrafik (1951-1980)
- Smyril Line
- SNAP/SNIP
- SNAV
- SNCF
- SNCM
- Società Transatlantica Italiana
- SOL Continent Lines
- Sol Lines
- Somat S.p.A. – Rimorchiatori Trapani
- Speed Ferries
- St.Peter Line
- Star Clippers
- Star Lines
- Starlauro
- Statens Järnvägars – SJ
- Stena Line
- Stradeblu
- Strait Shipping
- Strintzis Ferries
- Strintzis Lines
- Stoomvaart Maatschappij Zeeland – S.M.Z.
- Superfast Ferries
- Superseacat
- Swan Hellenic
- Swansea Cork Ferries (1987-2006)
- Swedish America Line
T
- T-Link Lines
- Tallink
- Tirrenia di Navigazione
- Townsend Bros Ferries
- Townsend Thoresen (1968-1987)
- Tor Line
- Tor Line RoRo
- Toremar
- Toscana Mini Crociere
- TR.E.MAR.
- TR.I.S. – Traghetti delle Isole Sarde S.p.A. (1990 – 2002)
- Tra.Spe.Mar
- Tra.Vel.Mar S.r.l.
- Traghetti delle Isole
- Traghetti Pozzuoli
- Trans Europa Ferries
- Trans Tirreno Express
- Transfennica
- Transport Of Tasmania
- Trasmapi
- Trasmediterranea
- Trave Line
- Trinidad & Tobago
- Truckline Ferries
- TS Laevad OÛ
- Tsokos Lines
- TT-Line
- TTT-Lines
- Typaldos Lines
- Tyrogalas Lines
- Tui Cruises
- Turkish Marmara Lines
- Turkish Maritime Lines
U
- Unity Line
- Ustica Lines
V
- Venezia Lines
- Ventouris Ferries
- Ventouris Sea Lines
- Vetor
- Viking Cruises
- Viking Line
- Virgin Voyages
- Virtu Ferries
W
- Wallenius Sol
- Wasa Line (1948-1993)
- Wasaline
- WightLink