A Spanish company vying for a $30 billion Navy ship building contract is using a Youtube video to imply its landing craft can carry Australias heavy tanks despite the boat sinking too low in water when the armoured vehicle was put on board. Navantia, one of three contenders for Australias $30 billion Future Frigates contract, has a contract worth about $240 million to supply Australia with 12 landing craft supposedly capable of carrying the armys 62 tonne M1A1 Abrams tanks.