I spy!

[He Who Shall Not Be Named]

Crane, damit ... I SHOULD HAVE WRITTEN, CRANE!

[oztruck]

Crain's look like a skinny swan!

[Kazzer]

See that floating crain outboard? Screw change?

David

What's a crain?

[He Who Shall Not Be Named]

See that floating crain outboard? Screw change?

David

[greenman407]

I SPY something not quite right. I think. This Delta is down by the bow. A procedural thing? Nobody seems to be running in panic and forming a bucket brigade.

[Kazzer]

Well, then .... F the whole bunch of ya!

Aha! It sounds like we've found the perpetrator of this horrendous grammatical crime!

[He Who Shall Not Be Named]

Sounds like one of Marvin the Martian's gadgets. LOL.

Well, then .... F the whole bunch of ya!

[Von Hilde]

I would guess they're more for propeller performance than cutting something. Most likely cavatation or vortex disturbance in the propellers wake for acoustics abation and better stealth capabilities.

[redboat219]

Sounds like one of Marvin the Martian's gadgets. LOL.

[Kazzer]

Turbulator? Turbulator? Tell me it isn't so! Who ever invented THAT as a word ought to be horsewhipped! It's worse than 'normalcy' and 'negatory'.

[He Who Shall Not Be Named]

Turbulators to maintain the low back side of the blade at a pressure just above the vapor pressure of the water there (attempt to reduce cavitation)?

David,

[redboat219]

Hmmm. I'm guessing they're some sort of cable cutting feature incorporated into the blade to enable it to "saw" through ropes or cable that may entangle the prop.

[greenman407]

I SPY a mystery! Why are these grooves cut in to the edge of these blades?

[greenman407]

Well its definitely a Delta, couldn't tell you from this angle which version. And yes on the Akula. Good job!

[redboat219]

Delta III and Akula