Please ID this NASA high-speed jet seaplane

Thank you,

it looks like Martin P6M,but the cockpit and rear fuselage
are completely different.

It’s not a prototype or production Seamaster!

We know it isn’t a proto or production model of the Seamaster, but it is very likey a hydrodynamic development model. Most complex aircraft at that stage don’t look just like the built version.
By the way, should the title read NACA and not NASA?

Looks to me like a Victor with a hull.

It’s not a prototype or production Seamaster! Convair were in the same design competition so may be an early evolution of their offering?
Prototype Seamaster shown below!

It is the closest thing to Martin Seamaster I can find, is it an early prototype possibly?

Beautiful lines!

That Convair design looks awfully similar to a SARO swept-wing jet design with a V-tail which also got to the water tank testing stage at Farnborough.
A good point raised in that forum through is that this could actually have been just for a design proposal that didn’t get anywhere, but the main features are very similar to the Seamaster.

I looked here as well Hesham ! 😉

http://www.secretprojects.co.uk/forum/index.php/topic,11125.0.html

I don’t use that forum nearly as much but there is some fun stuff there.

Wrong number of engines though

The Martin P-6M Seamaster had four engines aswel!

I would say it is for the Seamaster but perhaps in an earlier aerodynamic form, certainly before the intakes were lifted above and aft of the wing leading edges.

Wrong number of engines though :)….bit of Buccaneer and Tu-104 in there, too!

http://www.vectorsite.net/avcmast.html

looking at this image, you could well be right about the Seamaster.

Martin P6M Seamaster, I believe