David Billington wrote:

Maybe not, just checked the engine weight again and both cranes together
can only lift 2/3 or the specified engine weight.

This will do the job:
http://en.wikipedia.org/wiki/Crane_%28machine%29#Floating_crane

Or buy a used one with 3000 tons capacity: :-))
http://www.rodson.com/en/shipyard/used_floating_cranes_for_sale.html


Nick
--
The lowcost-DRO:
http://www.yadro.de