At this stage, the straightforward listing of Latécoère designations comes unstuck. The Laté 29 was a torpedo-bomber floatplane derived from the Laté 28 high-winged monoplane transport. Laté 29 derivative designations might be shown as eg: Laté 29-6 or Laté 296.
The Laté 298 follows the Laté 29 so it would be logical that the Laté 298 was the eight variant of the Laté 29. Indeed, this type is sometimes to be seen listed in modern sources as the 'Laté 29-8'.
This is inaccurate. The Laté 298 was a completely new, low-winged floatplane torpedo-bomber. Indeed, the Laté 298 was intended to be a replacement to the earlier Laté 29 series. Nevertheless. I will list the Laté 298 and landplane Laté 299 as if they numerically followed in the Laté 29-7 sequence.
From there, the numerical sequence will be continued but note dates to reveal that these projects and designs were often not chronologically sequential.
__________________________________
Latécoère Laté Designations - Laté 298 to Laté 675
Laté 298 Series - 1934 design, low-wing monoplane torpedo bomber
-- NB: Laté 298 design was a successor to the Laté 29, not a variant*
- Laté 298-01: 1936 prototype; 1 x 880 hp HS 12Ycrs1; 1 built
-- Laté 298-01 tests successful; float spreader bar later added
- Laté 298A: Coastal patrol model; revised canopy; 24* built
-- * 24 x Laté 298A ordered in 1937, some sources claim 30 built
- Laté 298B: Folding wing version; crew now 4 (not 3), 42 x built
-- Laté 298B for use on floatplane carrier
Commandant Teste
- Laté 298C: (Project) Floatplane (but other details unknown)
- Laté 298D: As per Laté 298A but with Laté 298B wings; 75 built
- Laté 298E: Obs. version with belly gondola; 1 x Laté 298D conv.
- Laté 298F: 1942 simplified Laté 298D ordered for Vichy, 30 built
-- Laté 298D total of 75 built may also incl. Laté 298F production
(* Nevertheless, 'Laté 29-8' is to be seen in place of Laté 298)
Laté 299 - 1939 retractable u/c adaptation of Laté 298 floatplane
- Laté 299: (As originally planned in 1938) 1 x 920 hp HS 12Y-27
- Laté 299-01: 1939 first prototype shipborne recce/torpedo-bomber
- Laté 299-02: 1939 second prototype, both with 970 hp HS 12Y-43
- Laté 299A: 1942 Laté 299-01 conversion to 2 x tandem HS 12Y-31s
-- Laté 299A-01 flown 1943 to test future Arsenal VB 10 config.
Laté 30 - (Project) 3-engined monoplane flying boat
- Laté 30: Slightly enlarged derivative of the Laté 27
- Laté 30: 3 x 600 hp Renault 12Ja V12s;* span 44.00 m
-- * 2 x tractor engines; 1 x central, trailing edge pusher
- Laté 30: Enclosed flight deck + 2 x tandem cabins
Laté 300 - 1931 flying boat for Aéropostale Dakar-Natal route; x 7
- Laté 300-01: Parasol-winged push/pull transport flying boat; x 1
- Laté 300-01: 4 x push/pull 650 hp HS 12Ner V12s; span 43.99 m
-- Laté 300 aground Berre Dec 1931; rebuilt as
Croix-du-Sud, 1932
- Laté 301: 1934-35 Air France mailplane, x 3 (2 later to military)
-- Laté 301 transf. to
Aéronavale: 2/1017 was reduced to spares
-- Laté 301 transf. to
Aéronavale: 3/1018 to part'l Laté 302 stds
- Laté 302: 1936 maritime recce variant for
Aéronavale; 3 x built
- Laté 302: 4 x push/pull 930 hp HS 12Ydrs V12s; span 43.99 m
-- Laté 302 crew of 8 (inst. of 4), 3 x Darne MGs, 4 x 75 kg bombs
Laté 31 - Single-engined biplane seaplane; aka Laté 31-0, Laté 310
Laté 32 - 1929 parasol push/pull transport flying boat; 8 x built
- Laté 32-1: Similar to Laté 21bis but with double-stepped hull
- Laté 32-1: Prototype; tandem 500 hp Farman 12We; 28 m span
- Laté 32-2: 1930 production; 2 x 500 hp Farman 12We, 7 x built
-- Laté 32-2 - 3 lost: c/n 80/F-AISN, 81/ F-AISO, and 82/F-AIRU
- Laté 32-3: Conv. to 500 hp HS 12Hbr; 6 x Laté 32-2 conversions
-- 32-3s: c/n 77/F-AILN; 78/'LU; 79/'LT; 83/'TV; 84/'TX; 85/'BK
Laté 33-0 - (Project) 3-engined flying boat;
no other details
-- Some online confusion with the Laté 300-01
Croix-du-Sud
Laté 34 - 1930 twin-engined parasol transport flying boat; x 1
- Laté 34 : Marcel Moine design; 2+5 accommodated in cabin
- Laté 34 : 3 (2 tractor/1 pusher) x 400 hp HS 12Jb; span 23.00 m
- Laté 34 : aka Laté 34-0; aka Laté 340; civilian reg. was F-AKDI
- Laté 34 : 03 April 1930 demonstrated to
Aéronavale officials*
-- * Disintegrated on its speed test over Salanque; 2 x fatalities
Laté 340 - (Project) 1930 3-engined transport flying boat
- Laté 340: Trans-Atlantic postal (+ pax?) monoplane
- Laté 340: 3 x 400 hp HS 12Jb engines;* span 31.20 m
-- * 2 x tractor engines; 1 x central, trailing edge pusher
- Laté 340: Broad-chord wings; long-span sponsons
Laté 34 - 1930 twin-engined parasol transport flying boat; x 1
- Laté 34 : Marcel Moine design; 2+5 accommodated in cabin
- Laté 34 : 3 (2 tractor/1 pusher) x 400 hp HS 12Jb; span 23.00 m
- Laté 34 : aka Laté 34-0; aka Laté 340; civilian reg. F-AKDI
- Laté 34 : 03 April 1930 demonstrated to Aéronavale officials*
-- * Disintegrated on its speed test over Salanque; 2 x fatalities
Laté 35 - 1931 high-winged trimotor 10 pax transport; x 1
- Laté 35-0: 3 x 400 hp HS 12Jb tractors;* span 22.35 m
-- * 1 x HS 12Jb in nose; 2 x strut-mounted beneath wings
- Laté 35-0: Sole prototype, enlarged version of Laté 28
- Laté 35-1: (Project) Planned prod'n model development
- Laté 35-1: aka Laté 351: 3 x 350 hp Gnome-Rhône 7Ks
- Laté 35-2: aka Laté 352: 3 x Gnome-Rhône radials **
-- ** Initial: 3 x 700 hp Gnome-Rhône 14 Kbr 14-cyl.
-- ** Later : 1 x central G-R 14 Kbr + 2 x G-R 7k 7-cyl.
Laté 36-0 - 1930 high-winged trimotor transport; x 1 (?)
- Laté 36-0: aka Laté 360;
no other details
Laté 370 - (Project) 1930 high-wing trimotor pax transport
- Laté 370: 3 x 400 hp HS 12Jb tractor V12s; span 22.35 m
- Laté 370: More spacious derivative of the built Laté 35
- Laté 370: As Laté 35 but with enlarged cabin dimensions*
-- * 10 passenger cabin, measuring 5.50 x 1.80 x 1.45 m
Laté 38 Series - 1929 parasol push/pull flying boat; 5 x built
- Laté 380 : Sometimes described as a 'sesquiplane' type*
-- * Due to appearance of its wing-like stablising sponsons
- Laté 380 : 2 x tandem 650 hp HS 12Ydrs V12s; span 31.40 m
- Laté 38-01: 1930 1st prototype mailplane; regist'd F-AKCS
-- aka Laté 38-0-01 or Laté 380-01, first flight 14 Sept 1930
- Laté 38-01: Prototype trialled at St Raphaël in Nov 1930
- Laté 380bis: Laté 38-01 modified for use by
Aéronavale**
-- Laté 380bis mods incl. lengthened hull & larger tailplane
-- ** Laté 380bis military conversion crashed 16 Mar 1933
- Laté 38-02: 1931 prototype Aéropostale mailplane; F-ALRP
- Laté 38-02: 1934 transfered from Aéropostale to Air France
- Laté 38-1: 1934 recce flying boat for
Aéronavale; 3 x built
- Laté 38-1: 2 x 650 hp HS 12Ydrs; span 31.40 m; aka Laté 381
- Laté 38-1: As Laté 380bis but wider hull & lengthened more
- Laté 382: (Project) Tandem HS 12Y; similar to Latécoère 381
- Laté 383: (Project) Modified '
hydravion d'exploration' type
- Laté 383: 4 (tandem pairs) x 350 hp Gnome-Rhône 7Kd 7-cyl.
- Laté 383: Reduced span & area; enlarged cabin/living quarters
- Laté 383bis: (Project) Laté 383 with Laté 381's 31.40 m wings
- Laté 384: (Project) Laté 383 with 4 x 350 hp HS 9Qa radials
- Laté 384bis: (Project) Laté 383 bis with 4 x 350 hp HS 9Qa
- Laté 385: (Project) Latécoère 383 with 3 x 500 hp GR 9Kbr
- Laté 386: (Project) Laté 381 with 3 x 700 hp GR 14Kbr radials
- Laté 387: (Project) Laté 381 with 3 x 650 hp HS 12Nbr V12s
Laté 39 - (??)
hypothetical designation
Laté 40 - 19(??) 3-engined transport a/c;
no other details
Laté 41 - (Project) 1929 single-engined recce flying boat
- Laté 41 : aka Laté 410
Laté 42 - (Project) 1929 4-engined reconnaissance flying boat
- Laté 42 : aka Laté 420
Laté 430 - (Project) 193? 4-engined sequiplane* seaplane
- Laté 430: 4 x tandem pair 480 hp GR 9Akx; span ~33 m
-- * Engine mounted at ends of shorter-span lower wings
- Laté 430: 2 x defensive Lewis guns; conv. to wheeled u/c
Laté 44-0 - 1931 3-seat parasol monoplane torpedo-bomber; x 2
- Laté 44-0/Laté 440: Short span derivative of the Laté 28-5
- Laté 44-0/Laté 440: 1 x 650 hp HS 12Nbr V12; span 18.25 m
- Laté 44-1/Laté 441: Laté 44 with 1 x 700 hp G-R 14Kbr radial
- Laté 44-2/Laté 442: Floatplane light-bomber Laté 440 variant
- Laté 44-3/Laté 443: Landplane light-bomber Laté 440 variant
-- NB: Laté 443 was wheeled Laté 44-02 (marked as 'Laté 44A')
Laté 45 - (??)
hypothetical designation
Laté 46/Laté 460 - (Project) 1931, 3-engined transport
Laté 47/Laté 470 - (Project) 1930, single-engined, low-wing tourer
Laté 48/Laté 480 - (Project) 1930 twin-boomed 4-motor airliner
- Laté 480: Engines divided between 2 x boom fronts & push/pull
-- Unclear whether engines were to be HS 12Ns or Lorraine W12s
Laté 49 - 1931 parasol 2-seat recce a/c for R.2 contest (Bre.19 repl.)
- Laté 49-0/Laté 490: 1931; all-Dural constr'n; 1 x 650 hp HS 12Nb
- Laté 49-1/Laté 491: 1932; slightly longer but lighter loaded weight
-- Both Laté 49-0 and 49-1 too heavy, rejected for ANF-Mureaux 111
Laté 50 - aka Laté 500 Series (below)
Laté 500 Series - 1932 parasol 3-engined flying boat mailplane; x 2
- Laté 500 series: Mailplane (Laté 500)/pax transport (Laté 501)
- Laté 500 series: 3 x 400 hp Hispano-Suiza 12Jbs;* span 31.40 m
-- * 2 x in wingtop tractor configuration; 1 x as central pusher
- Laté 500: 1932 mailplane; transatlantic route to South America
- Laté 501: 1932 passenger variant for Mediterranean routes**
-- ** Note: Pax-carrier Laté 501 flew before Laté 500 mailplane
Laté 51/Laté 510 - (Project) 1931 single-seat
Jockey fighter
- Laté 51/Laté 510: Strut-braced '
mouette' (gull) wings
- Laté 51/Laté 510: 1 x 500 hp HS 12Xbrs V12; span 10.04 m
- Laté 51/Laté 510: To Jan 1931 mod of 1929 C1 requirement
- Laté 51/Laté 510: Spatted main u/c wheels; belly radiator
Laté 520 Series - 1930 transatlantic passenger flying boats
- Laté 520: (Project) 1930-33, 4 x 1000 hp HS 18 Sbr W18s*
-- * To be mounted in tandem pairs; HS 18 Sbr abandoned
--
http://www.hydroretro.net/retro/photoretro.php3?id=79&lang=fr&fin=143
- Laté 521: 1935; revised with 6 x lower-powered engines
- Laté 521: 2 x tandem pairs, 2 x tractors 860 hp HS 12Ybrs
- Laté 521: 26 pax (trans-Atlantic); 72 pax (Mediterranean)
- Laté 521: Named as '
Lieutenant de Vaisseau Paris'
-- Sunk at Pensacola in hurricane, to France for rebuilding
- Laté 521: 1937; rebuilt with 6 x 650 hp HS 12Nbr V12s
- Laté 521: 1939; re-engined again for
Aéronavale service
-- 1st with 6 x 970 hp HS 12Y-37, then w/ 900 hp HS 12Y-27
- Laté 522: 1939; 2nd prototype; Air France transatlantic serv.
- Laté 522: 6 x push/pull 970 hp HS 12Y-37 V12s; span 49.30 m
- Laté 521: Named by Air France as '
Ville de Saint Pierres'
- Laté 522: To
Aéronavale; 900 hp HS.12Y-27, then back to '37
- Laté 523: 1938;
Aéronavale recce vers., 900 hp HS.12Y-27; x 3
-- Vichy maritime recce use; named
l'Algol,
l'Aldébaran, &
l'Altair
- Laté 524: (Project) 1936 Laté 521/522 derivative, 8 x engines
- Laté 524: Some sources list CLM Lille 6As opposed diesels
- Laté 525: (Project) 1936 Laté 521/522 derivative, 8 x engines
- Laté 524: Some sources list 8 x Hispano-Suiza 12Y variants
Laté 53/Laté 530 - (Project) 1930 4-engined monoplane bomber
- Laté 53-0/Laté 530: High-winged design; engine type unclear
- Laté 53-0/Laté 530: Landplane bomber variant
- Laté 53-1/Laté 531: Floatplane development of the Laté 530
Laté 54/Laté 540 - (??)
hypothetical designation
Laté 55-0/Laté 550 - 1933 4-engined bomber prototype; x 1
Laté 55-0 : Push/pull engines; pod/boom fuselage; twin tails
- Laté 55-0: Tandem pairs; 500 hp GR 9Kdrs; span 33.97 m
- Laté 55-0: Convertible from landplane to floatplane (4 hrs)
- Laté 55-0: Submitted for BN 5 as a fixed u/c night bomber
- Laté 55-0: Twin-float torpedo-bomber form; 29 April 1933
-- Flew Biscarosse; to CEPANA Saint-Raphaël; sunk Oct 1934
Laté 56/Laté 560 - (Project) 1932 4-engined flying boat
- Laté 56/Laté 560:
No other details
Laté 57/Laté 570 - (Project) 1932 4-engined flying boat
- Laté 57/Laté 570: aka Laté 57-0 (?); no other details
-- Note designation duplication (below) within 5 years*
-- * Suggesting Laté 57 devel. cancelled quite early on
Laté 570 - 1939 twin-engined medium bomber prototype; x 1
- Laté 570: Design begun 1937 to meet Nov 1934 B4 contest
- Laté 570-01: 2 x 1,120 hp HS 14Aa 14-cyl. radials; span (??)
- Laté 570-01: 1939 prototype; Amiots & LeO 451 in service*
-- * If not so late, HS 14Aa would have likely put paid to 570
--
https://www.secretprojects.co.uk/threads/latecoere-570.8580/
Laté 580 Series - 3-engined parasol monoplane flying boat; x 1
- Laté 580 Series: Unbuilt projects leading to sole Laté 582
- Laté 580 Series: 3 x tractor engines on strut-braced parasol
- Laté 580: (Project) 1934 flying boat (poss. based on Laté 57?)
- Laté 581: (Project) Laté 580 devel.; evolved into the Laté 582
- Laté 582: 1935 prototype long-range naval patrol flying boat
- Laté 582: 3 x 890 hp Gnome-Rhône 14Kjrs; span 28.00 m
- Laté 582:
Aéronavale employed as test bed at Saint-Raphaël
Laté 590 - (Project) 1934 study;
no intended role specified
- Laté 590: 1 x 760 hp Gnome-Rhône 14Kdsc radial; span (??)
Laté 600 Series - (Project) 1932-33 push-pull flying boat
- Laté 600: (Project) 1932-33 flying boat; no other details
- Laté 601: (Project) 1932-33 flying boat; no other details
- Laté 602: (Project) 1932-33 flying boat, see reply #30*
-- * Shows 4-engine push/pull; strut-mounted outriggers
Laté 610 Series - 1935 4-engined long-range flying boat; x 1
- Laté 610: (Project) May 1935
Aéronavale recce flying boat
-- Laté 610 as designed: single fin, span 38 m, length 24.5 m
- Laté 611: Enlarged recce 'boat to modified Dec 1935 spec.
- Laté 611: (As planned) 4 x 1,000 hp HS 79.02 radials
- Laté 611-01: 1939, conv. under const. to Gnome-Rhônes
- Laté 611-01: 4 x 1,010 hp G-R 14N4/5 radials; span 40.56 m
-- Laté 611-01, G-R 14N30/31 engines substituted after trials
- Laté 612: (Project) Planned prod'n model with US engines
- Laté 612: 4 x P&W S3C4-G 14-cyl.; 5 x ordered, none built
-- Laté 612 to have 4 x powered turrets (incl. a tail turret)
- Laté 613: (Project) planned variant;
no further details
- Laté 614: (Project) planned variant;
no further details
- Laté 615: (Project) planned variant;
no further details
- Laté 616: (Project) planned variant;
no further details
- Laté 617: (Project) planned variant;
no further details
Laté 620 - (Project) 1935-36 North Atlantic pax flying boat
- Laté 620: 4-engined; 20 x passengers; 6,000 km range
- Laté 620: 4 x 2,ooo hp Gnome-Rhône 18Lars; span (??) m
-- G-R 18Lars 2-row radial failed to deliv. promised power
- Laté 620: Devel. cancelled; emphasis shifted to Laté 630
Laté 630 Series - 1936 long-range flying boats, 11 x built
- Laté 630 Series: Civil transatlantic pax flying boats
- Laté 630: (Project) 1936; 6-engined pax flying boat
- Laté 630: (Project) 6 x 1,650 hp Gnome-Rhône 18P
- Laté 631: (Project) 1937; 42-50 pax for South Atlantic
- Laté 631: 1st prototype; F-BAHG; 1st flew 04 Nov 1942
-- To Luftwaffe; 61+11; destroyed by strafing 17 Apr 1944
- Laté 631: 1st production; F-BANT; 1st flew 07 Mar 1945
- Laté 631: 6 x 1,600 hp Wright GR-2600-A5B; span 57.43 m
-- The Laté 631 proved unreliable/uneconomical in service
- Laté 632: (Project) planned variant;
no further details
- Laté 633J: (Project) 1949 jet-assisted military derivative
- Laté 633J: 4 x Arsenal Ars. 24H + 2 x R-R
Nene jets*
-- *
Nene turbojets in tails of outboard nacelles
- Laté 633J: Armament 2 x 30 mm; 4 x 15 mm or 20 mm
- Laté 634: (Project) planned variant;
no further details
- Laté 635: (Project) planned variant;
no further details
- Laté 636: (Project) planned variant;
no further details
- Laté 637: (Project) 3 x different engine options offered
-- Wright GR-2600; P&W R-2800; Bristol
Centaurus
- Laté 638: (Project) Armed military variant (patrol a/c?)
- Laté 638: 6 x Wright R-2600
Twin Cyclone engines
-- Armament 2 x 30 mm; 6 x 12.7 mm; 4 x 7.5 mm guns
- Laté 639: (Project) planned variant;
no further details
Laté 640 - (Project) 1936 large, long-range flying boat
- Laté 640: 6 x Junkers
Jumo (type?) diesel engines
- Laté 640:
No other details
Laté 650 - (Project) no details known; see reply
#36
- Laté 650: Poss. 1936 North Atlantic flying boat project
Laté 660 -
hypothetical designation
Laté 670 Series - (Project) 1938 low-winged fighter aircraft
- Laté 670 Series: Hispano-Suiza 12Y-powered fighter types
- Laté 670: (Project) Straight-winged twin-float fighter a/c
- Laté 671: (Project) Gull-winged Laté 670 floatplane deriv.
- Laté 671: Main hull float + 2 x outriggers; all retractable
- Laté 672: (Project) Laté 670 floatplane derivative, unbuilt
-- Laté 672: Hull float + 2 '
ballonnets de voilure', all retract
- Laté 673: (Project) Laté 670 float-fighter derivative, unbuilt
- Laté 673: (Project) Twin-boomed, twin-float pusher seaplane
- Laté 673: 1 x Hispano-Suiza 12Y (pusher prop); span 11.42 m
-- Laté 673: Nose armament 25 mm + 4 x 7.5 mm machine guns*
-- * 25 mm HS 408 cannon based on 'necked-up' HS 404 casing
-- * Lower mg pair could be tipped downward, aiming at ground
- Laté 674:
hypothetical designation
- Laté 675: (Project) retractable-wheeled gear shipboard fighter
-- Laté 675 rejected, Dewoitine D.790 (navalized D.520) chosen
--
https://www.secretprojects.co.uk/threads/projected-aircraft-for-marine-nationale-carriers-joffre-and-painlevé.18029/#post-28615
--
https://www.secretprojects.co.uk/th...-seaplane-fighter-projects.15883/#post-375311
--
https://www.secretprojects.co.uk/th...-seaplane-fighter-projects.15883/#post-317927
Note: Pierre-Georges Latécoère dies 23 Aug 1943
Out of Sequence Latécoère Laté Designations
Laté 150 - (Project) 1940 trans-Atlantic transport flying boat
- Laté 150: 4 x 3,600hp Hispano-Suiza 24Z X24s; span (??) m
- Laté 150: Ended when HS 24Z (doubled HS.12Zs) cancelled
Laté 160 - (Project) 1943-45 trans-Atlantic passenger airliner
- Laté 160: 52-passengers seating in a twin deck arrangement
- Laté 160: 4 x 3,600hp Hispano-Suiza 24Z X24s; span (??) m
- Laté 160: Initial design, landplane deriv. of Laté 150 'boat
- Laté 160: Ended when HS 24Z (doubled HS.12Zs) cancelled
--
https://www.secretprojects.co.uk/threads/latécoère-laté-160-transatlantic-airliner-project.12416/
Laté 170 - (Project) 194? 6-engined military flying boat
- Laté 170: Long-range maritime patrol aircraft(?)
Laté 180 - (Project) 194? very large 8-engined flying boat
- Laté 180: Long-range patrol a/c(?); 4 x push-pull pairs
- Laté 180: 8 x HS 24 Zs (rear exten. shafts); span (??) m
- Laté 181: Planned armed military variant of Laté 180
- Laté 181: 8 x HS 24 Zs (rear exten. shafts); span 77.38 m
- Laté 181: Armament 6 x 30 mm cannons; 12 x 12.7 mm
- Laté 182: Planned armed military Laté 180 development
- Laté 182: 8 x HS 24 Zs (rear exten. shafts); span 79.10 m
- Laté 183: Planned 6 x turboprop-engined military devel.
- Laté 183: 6 x 4,700 shp BMW 028 engines; span 79.10 m
Laté 230 - (Project) 19(??) large turboprop flying boat
- Laté 230: Long-range patrol/transport aircraft (??)
- Laté 230: 6 x Armstrong-Siddeley
Python; span 57.43 m
- Laté 230: Armament 2 x 30 mm; 4 x 15 mm or 20 mm
Laté 700 - (Project) 1955 civilian amphibious aircraft
- Laté 700: Based on Maurice Delanne design; see reply
#35
Laté 900 - (Project) 1940 8-engined long-range flying boat
- Laté 900: Laté 631 derivative with 8 x push/pull engines*
-- * Presumably 1,650 hp Gnome-Rhône 18Ps; MTOW 250t
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