SPMT's
SPMT stands for 'self propelled modular
trailers', equipment that is used in a wide range of industries.
SPMT's can easily transport civil constructions and petrochemical
components on land. During load-outs, they are often used as
vehicle to drive heavy load components from the quay onto the
barge.
One trailer consists of different modules from 4 or 6 axle lines
with a capacity of 36 up to 48 tons per axle line each. SPMT's have
the possibility of circle drive around the centre of the trailer or
execute "crab moves". The lifting height of heavy load components
is approx. 500 mm. Due to their variety of combinations, 
they can lift and
move nearly every heavy load component. The current world record in
moving and lifting an offshore platform with SPMT's is 15000 tons,
executed by Sarens in 2010.
The technical info can be found here.
