Dive bombers to Ceylon 1942

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Yes the Commonwealth invasion of Madagascar and the following six months of fighting against the French addressed the great hazard posed by a Japanese use of Madagascar even though the risk was moderate that it would happen. The length of the campaign against the French displays both the limited resources given for the campaign and the size of Madagascar. The place is huge (@600,000 sq km) and has some very difficult country.

The Commonwealth forces had some experience fighting the French such as Mers el Kébir, Djibouti, Dakar (lost), Syria, Lebanon, Algeria as well as Madagascar.

Trivial fact: the Germans never bombed Gibraltar but the French did in July 1940 and September 1940 whilst the Italians did some in 1942 and again a couple of times in 1944.
 

None of that changes the fact that when you've got big flat wooden decks and lots of fuel and bombs, a single dive-bomber can ruin your day. Ask USS Franklin. 2 250-kg bombs nearly sank the ship, cost almost 800 dead, and most definitely not a Woolworth carrier.

This in 1945. If USN damage control had been 1942-quality, ship's gone, no one cares about VT fuses or the many quad-40s ... because all it takes is one bomb at the wrong time.
 
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That's why I think this could have been the greatest day for the Skua and/or Chesapeake. You've got unprotected flattops with unarmored decks filled with aircraft, with crews and processes totally unprepared for damage control. Let's put FAA men in the Skuas, RAF in the Chesapeakes and go at em.
 

I think better aircraft would help. A6Ms could and did chew up better DBs in the right circumstances ... but more planes are better than fewer.
 

Totally agree, but Fulmars while not great against zeros had some utility as armed recon planes.


My assessment of the Stuka greatly improved from reading some detailed combat histories from the Med and Russia. I'd definitely say they were still quite dangerous weapons well into 1943, for example at Kasserine pass. Absolutely lethal against the British convoys in the Med as well, where front line fighters were a little more rare.

Stukas were probably the most accurate dive bombers, and required less skilled crew, and had surprisingly good ability to evade fighters. The problem the Stuka had was that the German fighters were not ideal for sustained dogfighting which was kind of necessary to do effective bomber escort. In the Med the Bf 109 pilots would often abandon the Ju 87s which didn't necessarily mean they got slaughtered (sometimes they did, but often they managed to evade) but it did prematurely end their bombing raid. The FW 190 basically is what replaced them (and somewhat, the Ju 88) but the FW 190 wasn't as accurate and once fast enough fighters were around, Ju 88 had appalling losses sometimes.

The SBD was like the Stuka and the D3A, they were all flawed but all lethally effective longer than people assume, and in more roles (SBD and D3A both did fairly effective armed recon and ASW as well). But for sinking warships, those are the big three for WW2, IMO.

(and their replacements were problematic for everyone - D4Y had a host of problems, B6N came too late and not quite enough of a performance edge to matter, Aichi B7 looked great on paper but came even later, and was too big to operate on most IJN carriers. Stuka was never replaced by another dive bomber. Using He 177 in that role was just harebarined. At least the SB2C was eventually tweaked sufficiently to play some role in the war. The biggest flaw with that plane was IMO down to Navy insisting on making it so short so they could fit two on an elevator simultaneously)


Only limit for the Swordies on that one is about a 150-175 mile combat radius with a torpedo (? just guessing there based on max range), though I guess some of the UK patriots around here can fill is in on the precise details.

I know virtually nothing about Wellington maritime operations except for reading about some Med operations. I'd love to hear more.

Wellingtons are another very early design that punched above it's weight for a long time, they were absolutely lethal against Axis shipping in the Med, good at ASW, and I gather scored a few points in the Pacific Theater as well. They were very slow and not really capable of duking it out with fighters in the daytime, but they had almost infinite range and did night time bombing and torpedo attacks, mine laying etc. quite effectively. They did all kinds of weird interesting missions in CBI too. Again hopefully some of the UK patriots can fill us in with more detail if any want to.

But I don't think the IJN had any night fighters per se, or in April 1942 air search radar, so a night torpedo attack might indeed be a nasty surprise for them. I guess the catch would be, for it to be effective you'd probably need a lot of those Wellingtons. PBYs could also be used this way of course.
 
I think better aircraft would help. A6Ms could and did chew up better DBs in the right circumstances ... but more planes are better than fewer.

Daylight bombing attack with slow bombers and no fighter escort just isn't going to work against IJN, in my opinion. Maybe fast bombers like Marylands could survive but they are nowhere near as accurate as a DB.

If you wanted like Skuas and Chesapeakes to hit IJN carriers with that fleet of them, they would need a huge fighter escort with at least competitive fighters. Unless maybe they managed to attack the CVL out on it's own or something.
 
And Marines in the Wildcats!
 
Airfields on Ceylon in April 1942
Colombo Racecourse - turned into an airfield in early 1942. Passed to RN in 1943

Ratmalana - previously Colombo Civil Airport with some use by the FAA in 1941 before being taken over by RAF in March 1942.

China Bay, Trincomalee - pre-war RAF station to support the RN. Significantly upgraded with longer runway during WW2 to handle B-29s. To RN late 1944.

Koggala Lake - flying boat base at southern tip of the island.

Additions during WW2 after April 1942:-
A large construction programme was begun from mid-1942 to create new airfields to support both RAF operations out over the Bay of Bengal as well as RN second line squadrons and shore bases for carrier groups when in port as well as defence of the island. Some of these are only very rarely heard of.

Vavuniya - work begun 1942. Opened by early 1943 for the two TB squadrons.

Negombo (Katunayake) - built 1944 as a Very Heavy Bomber station (i.e. for B-29) but used as a transport Staging Post. Became more important post war.

Kankasenturai - was a Liberator GR base by 1944.

Minneriya - work started on construction July 1942. Another Liberator GR base by 1944
Minnerriya

Dambulla - land requisitioned for an Advanced Landing Ground. Fighter station available by late 1942.

Sigiriya (near Kandy) - land requisitioned in 1942. Became Mountbatten's "private airport" from late 1943 according to one report.

Katukurunda - opened in 1942, and to RN

Puttulam - Originally planned as a dispersal field for RAF units around Colombo but opened Nov 1942 for RN

Kalemetiya - created as a fighter station by Aug 1942.

Mawathagama - grass strip near Mountbatten's HQ. Suitable for up to C-47.
 

Or they'd have to have the numbers to distort and distend the CAP ... and still be willing to take heavy losses, a la Americans at Midway, where our fighter escorts were essentially ineffective due to small numbers and large miscommunications.
 
Good discussion so far, but we have to remember that the IJN carrier TFs had no AW radars in April 1942, or in May or June 1942 and consequently IJN CAP failed to intercept RAF/USN strike missions before the bombs were dropped on several occasions, including April 9 1942.
 
Or they'd have to have the numbers to distort and distend the CAP ... and still be willing to take heavy losses, a la Americans at Midway, where our fighter escorts were essentially ineffective due to small numbers and large miscommunications.

Having a strong fighter force back at Ceylon would be helpful, because it would attrit the IJN air forces as they will probably be forced to attack and try to neutralize it.

IJN has a range advantage for daylight fighters available to Allies in April 1942, so they can decide if they want to come within range of daylight Allied bombing strikes, but on the other hand if they want to wreck the airfields in Ceylon, or get at Royal Navy ships docked their or lurking nearby, they will have to fight their way through the RAF / FAA CAP and take losses accordingly if the latter is robust enough.
 

IJN attack aircraft had good range as well. I suspect there might be a sweet-spot where KdB could strike Ceylon without much danger from the single-engined Allied bombers. I doubt Nagumo/Genda et all crunched those numbers in this specific case.

D3Ys could, however, reach Guadalcanal from Rabaul (550 miles or so). Adjusting for Op C, with the uncertainty of carrier ops, hypothetically reduce that to 400 miles. Do the Allies have dive-bombers that can reach that far -- or fighters to escort them? I don't believe so.
 
IJN attack aircraft had good range as well. I suspect there might be a sweet-spot where KdB could strike Ceylon without much danger from the single-engined Allied bombers. I doubt Nagumo/Genda et all crunched those numbers in this specific case.

Oh, 100%, and I bet they did crunch the numbers, albeit probably with some partly flawed intel


No they do not. But they do have some level bombers that can probably reach. The problem is without fighters, with multiple IJN carriers out there, RAF or FAA bombers in the daytime are going to be hard pressed to survive, IMO.
 
Indeed. If there was on thing the Japanese should have acquired from their German allies it's radar tech. Imagine at Coral Sea and Midway (first tested and then perfected after this Ceylon raid) if Nagumo's carriers had air-intercept (air-warning) radar. By 1939, the Germans had installed surface-search and gunnery radars, not air-intercept onto the Scharnhorst class battleships, which could have been installed as an air-warning set in at least one IJN carrier (along with a CIC or FDO and working radios) by 1942. If Nagumo has radar, my Skuas and Chesapeakes, along with the Blenheims will not find those essential undefended skies that day.
 
On April 9 1942 9 Blenheims bombed the KB, and four were shot down by CAP, near the carriers, for the loss of one Zero, but unluckily the Blenheims were intercepted a 2nd time by Zeros and Vals returning from the Hermes strike, and another Blenheim and a Zero were shot down. So the KB, with 5 carriers and ~20 Zeros aloft only managed to shoot down 4 Blenheims. If we add ~30 Fairey Battles to the Blenheim formation, it seems unlikely that RAF losses would increase much since the Battle has the same (IIRC) defensive armament as a Blenheim and similar top speed. Ditto for a squadron or two of Skuas, albeit slower than Blenheims.
 

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