Abstract: A protective fairing encloses the head and torso of a SCUBA diver wearing diving equipment, with clearance throughout. A viewing shell section of the fairing covering the diver head is attached to a torso covering shell section to form a hydrodynamic shape facilitating forward underwater movement by reducing drag. Such torso shell section has vent holes formed therein to prevent water displacement within the fairing by air and is provided with buoyancy distributing weights to neutralize the effect of positive buoyancy during forward movement through seawater.

Abstract: The invention features a self-contained enclosure-plus-enclosed contexture and the implementation thereof in a multi-phase launching system, according to which the waterborne first phase entails naturally (buoyantly) induced motion, and at least the airborne second phase entails artificially (technologically) induced motion. Typical inventive practice provides a launch canister which is exteriorly configured to be hydrodynamically efficient while moving buoyantly upward in response to hydrostatic pressure, and which has a chamber for stowing an air vehicle. The inventive vehicle-stowing canister is released underwater so as to be buoyantly propelled upward and into the air, at which time the air vehicle is mechanistically propelled (e.g., boosted), in response to which the canister becomes disjointed cooperatively with the uncoupling of the air vehicle from the canister. The air vehicle continues to propulsively ascend, the canister's nose cone and main body gravitationally falling to the water below.

Abstract: The invention features utilization of a duplicate form for creating a conformal cavity which equally mates with an original form having the same shape as the duplicate form. The duplicate form is situated in the wall from the inside of the wall, elastomer is cured onto the outside of wall and around the duplicate form, the duplicate form is removed, and the original form is situated in place of the duplicate form. The shape of the hole in the wall is not in strict conformity with the shape of the duplicate form and the original form, but rather is characterized by a small aberration which leaves a space when either the duplicate form or the original form is situated in the hole. This small aberration, together with the elastomeric quality of the cured material, permits ingressive venting during removal of the duplicate form and egressive venting during insertion of the original form. In typical inventive practice, the manipulative steps are performed from the inside of the wall.