What Bernoulli actualy states is that Dynamic Pressure PLUS Static Pressure = Total Pressure, and that (for any given altitude) Total Pressure MUST be a constant.

This basic error (in my sport of paragliding) in 1st READING what Bernoulli in fact stated, followed of course by instructors & pilots then failing to understand the implications of the common errors, has resulted in many injuries & deaths :-(

“Occasionally the question is posed about a fly inside an airliner that is flying along. When the fly is sitting on the leg of a person sitting in a seat, obviously the weight of the fly is being carried by the wings of the plane; that goes without saying! But what happens when the fly takes off and starts buzzing around inside the plane? Has it now become disconnected from the airliner so that it is, as it were, a free and independent entity within the cabin? Did the gross weight of the plane change by the amount of the weight of the fly? The answer is no! When anything is in flight, be it an insect, bird, or plane, its weight is still borne up by the earth below it. We fail to see that the air which is pushing up on the bottom of the wings of these flying objects is also pushing down on the earth below. Their flight through the air hasn’t somehow become isolated from the ground but still exerts a force on it the same as if it is at rest. The support force for the plane, though it may be 20 psf at the wing, gets spread out over the earth below it so that when a jet flies over we don’t feel a momentary impulse”

http://www.eaa.org/experimenter/articles/2011-11_lift.asp

P.S., aircraft measure their speed in knots too.

Of course, I don’t expect an aluminum, steel, or ferrocement hull would split at all. And fiberglass requires many heavy layers of resin-saturated fiberglass, or a “cored” hull where a core of balsa, foam, or other material is laid down between the inner and outer layers of fiberglass to provide stiffness. Depending on the quality of the craftsmanship, a fiberglass hull could withstand a hurricane, or be smashed to bits by a common hammer.

(And on the craftsmanship note… apparently a lot of boat manufacturers are LYING about their ‘fiberglass’ hulls. Only about 10-20% of the hull is actually fiberglass, and the rest is mostly putty, with no structural fiber at all. These types of boats fall apart from even minor impacts. If I ever buy a fiberglass boat, I’m gonna buy one built before 1992, for this exact reason.)