This is where the constructitrains resurrect Megatrin in Revenge of The Ultratron.
[we now are at sea and we come up to a cargo ship]
[on deck we veiw some construction equipment and vehicles]
Constructitrain #1: Let's move.
[the vehicles then transform and jump into the sea]
[they all swim down to the ocean floor and see the corpse of Megatrain]
Tiny Deceptitrain: He needs parts. Kill the little one!
[the Constructitrains then rip apart a front loader one and then give the parts to tiny Deceptitrain]
[they then repair Megatrain with the parts, giving him a stronger and bigger form]
Deceptitrain: Rise, my lord! [jams the Alspark shard into Megatrain's chest and the great Deceptitrain springs to life]
Megatrain: [flies out of the ocean and into space to who knows where]