AP 118 · No. 10 Section II · Aircraft 1952

Aircraft hub · 1952 · Early jet age

Saunders-Roe Princess

The largest all-metal flying boat ever built, launched just as the world stopped wanting flying boats. No museum in the gazetteer holds one.

1952
First flight
3
Built
380 mph
Top speed
0
Museums

Last verified 2026-10-18 against the gazetteer Compendium. Service bases and fleets change: check before travelling.

Not on charge

Where to see the Saunders-Roe Princess in the UK

Only G-ALUN ever flew. All three were cocooned at Cowes and Calshot and scrapped by 1967, so none survives.

3D model

The SR.45 Princess, G-ALUN in 3D

A procedural model built in Blender from the type’s published dimensions, painted as G-ALUN, the Saunders-Roe SR.45 Princess, the only Princess to fly, standing on its beaching gear on the slipway at East Cowes as photographed in 1953–54: the largest all-metal flying boat ever built, with a pressurised double-bubble hull on a two-step planing bottom, a 219 ft 6 in wing carrying ten Bristol Proteus turboprops in six nacelles (four coupled pairs driving contra-rotating propellers and a single engine in each outer nacelle), wing-tip floats retracted to form the wing tips, and a tall fin above a dihedral tailplane: bare aluminium hull sides, wings and nacelles, a white roof and white fin and rudder, a dark blue cheat line through the upper-deck windows with a white pinstripe below it, a grey planing bottom, a Union flag high on the fin with ‘G-ALUN’ in black below it and ‘G-ALUN’ under the port wing (no Princess survives; the shape was taken from a published three-view scaled to the published span, length and height and checked against some 20 photographs of G-ALUN; the colour of the planing bottom is inferred from black-and-white photographs, the beaching gear’s wheel sizes are estimated, and a small unreadable marking near the bow is left off). Drag to orbit, scroll or pinch to zoom · all 297 models · download .glb (1.8 MB) · Plate 208 in The Hangar

Type notes

The Saunders-Roe Princess in brief

TypeSaunders-Roe Princess (SR.45)
UK museums holding oneNone