| Name | CMS Sealion | | Category | Special service ships - Seagoing tugs | | IMO | 7341142 | | Call sign | 9H3143 | | Flag | Malta | | Year of built | 1974 | | Place of built | United Kingdom | | Length, m | 30.40 | | Width, m | 8.44 | | Deadweight, t | 154 | | Gross tonnage | 236 |
| | Other names | Ralph Cross - 1989 Jul, Grez - 2007 Jul, Matthias - 2009 Jul | | Home port | Valletta | | Shipbuilder | Richards Drydock & Engineering - Great Yarmouth | | Classification society | Registro Italiano Navale | | Main engine power, h.p. | 1,968 | | Owner | Cassar Marine Services Ltd. | | Operator | Cassar Marine Services Ltd. | | Status | In Service |
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