LOWERING UNDERWATER DEVICE Russian patent published in 2015 - IPC B63B21/66 

FIELD: transport.

SUBSTANCE: lowering underwater device contains stabilising fins behind hull with blades installed at small angles of tilt relative to device longitudinal axis. Stabilising fins is supplemented by blade being horizontal in span and having chord located perpendicular to device longitudinal axis. Additional blade is installed above articulated joint of flexible link attachment element and separately from hull. Herewith, additional blade is attached to rear edges of stabilising fin blades. Planform of additional blade, its area and arrangement are selected from condition of balancing of hydrodynamic moments of hull and fins relative to articulated joint axis.

EFFECT: better angular stabilisation of lowering underwater device in conditions of operation at low velocities of inflow caused by vessel motion in drift or by sea current during vessel anchorage, or by action of carrying vessel rolling.

3 dwg