I haven't seen these mentioned yet:
146MT military tanker
based on 146-200 with large freight door
4 fuel tanks in the fuselage
2 hose units under the wingtips
IFR probe
25,000 lb fuel transfer capacity
146MRL military rear loader
based on 146-100 with new rear fuselage with a ramp (could be opened in flight)
floor lowered and strengthened
new UC: tandem main wheels in sponsons, larger front wheels
saddle tanks
IFR probe
navigator's station
could load e.g. 2 HMMWV or 4 pallets (C-130K can load 3 HMMWV or 5 pallets)
146N naval COD
Carrier-capable version
based on 146-100 STA with large freight door
extendable nose wheel (to increase AOA on takeoff, and to help stow the aircraft in the hangar)
Folding wings, with the fold just outboard of the engines.
Landing tests were done at USN Patuxent River in 1986 using a 146-100 demo aircraft
all are listed in 'BAe 146: Britain's best-selling jet airliner' from Key Publishing.
Includes a 3-view of the MRL and artist's impressions of the MRL and 146N.