You mean this one, with lifting capacity of 1600 m.t. in tie-back:
I was thinking more on something like sheerleg crane barges like this one, with lifting capacity of 5000 m.t::
www.asianlift.com.sg › pdf › asian-hercules-III-5000mt-Capacity
(http://www.asianlift.com.sg/pdf/asian-hercules-III-5000mt-Capacity.pdf)
Paired up with her sister, the AH II with a lifting capacity of 3200 m.t.:
www.asianlift.com.sg › pdf › asian-hercules-II-3200mt-capacity
(http://www.asianlift.com.sg/pdf/asian-hercules-II-3200mt-capacity.pdf)
Or the Gulliver 2 x 2000 m.t.
http://www.scaldis-smc.com/en-GB/gulliver-is-ready-to-travel/6/10105/
Paired with Rambiz, 3300 m.t tandem lift:
http://www.scaldis-smc.com/en-GB/rambiz/31/
FYI:These two worked together for the salvage of the Norwegian frigate Helge Ingstad earlier this year.
There is no shortage of HLVs that could carry these simultaneously across the ocean.