Model Variants (Including Prototypes)
XPB2Y-1 - Prototype Model Designation; single tail fin; retractable wing-tip floats.
PB2Y-2 - Revised XPB2Y-1 Prototype Design; fitted with 4 x Pratt & Whitney R-1830 radial engines; twin tail fin design.
PB2Y-3 - Self-Sealing Fuel Tanks; improved armor protection; extended rear hull.
PB2Y-3R - Dedicated Transport Model; accommodations for up to 45 passengers or equivalent cargo.
XPB2Y-4 - Prototype Model fitted with 4 x Pratt & Whitney R-2600 type radials; slightly increased performance capabilities.
PB2Y-5 - Low-Altitude Variant; fitted with single-stage R-1830-92 radial engines; PB2Y-3 models modified to this standard; extended rear hull.
PB2Y-5R - Air Ambulance Model
Coronado Mk I - British Designation for PB2Y-3 models.