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P.144-05,P.144-08,P.144-09,P.144-11,P.144-13 and P.144-14 were its known versions.

There is no many differences between them,P.144-05 fitted with two MG 81 7,9mm guns,and two MG 131 13mm guns for self defense,P.144-08 powered by three BMW 801s,P.144-09 was the same as P.144-08,but with different equipments,P.144-11 was two-seat (all the previous models had a four-seat) and powered by three Junkers Jumo 213s with MG81 guns,P.144-13 was a larger size version,powered by three BMW 801s and P.144-14 was a four-seat sea rescue aircraft,fitted with MG131 guns.

The design featured in P144-05shows
a tricycle undercarriage.a tractor prop
engine in each wing and a third engine
buried in the rear fuselage.d riving a
pusher prop. Options are given for different
bomb or torpedo loads and cameras are
shown fitted into the fuselage at the rear of
the bomb bay. For defence, a rear observer
has control over a pair of MG 131 machine
guns, one mounted in the rear of each
wing mounted engine nacelle for a clear
field of fire. Two for ward firing MG 81s
are mounted in the front of thecockpit.
P144-08 fills in the detailof the designs
extensive cockpit glazing, but switches the
configuration from tricycle undercarriage
to tail sitter. Here the engines are given as
BMW 801s. The next drawing. P 144-09, is
different again in having the crew cabin
mounted lower down in the fuselage. And
for P144-11. drawn on November 1.1939.
the cabin has gone all the way down to sit
flush with the base of the fuselage.  Now
the engines are to be a pair of Jumo 213s and
thecockpit glazing structure has changed.
In P144 13. the engines arc back to
BMW 801s and the cockpit has undergone
a radical overhaul, with a much simpler
glazing design.P 144 14 shows the internal
structureof P 144-13. with the cockpit
MG 81s replaced by a single MG 131.