Out of my depth

In each of the tubes was a piston that ended in a broad curved "lear" (leading to the pistons being know as arbors)....

Leaf?

And the explosion of the depth charges roiled the water, meaning.... Crossposted at my place.

The whole long post was just click bait?

I'm with WeirdDave on the timing of this, except mid-day I might get to read it, but wouldn't have time to add this brilliant commentary.

I suspect XBradTC was sleep-posting?

But you might charge I'm out of my depth to think that.