Modular keel

A modular keel for a boat hull, the keel comprising:

• a base extending along a centerline of the hull, the base tapering aft to fore toward a vertex on the centerline, the vertex being formed by converging edges of the base;
• opposing curved segments laterally extending from the vertex toward a stern substructure, the opposing curved segments being outboard from the base, wherein each curved segment is defined between an edge of the base and an arcuate contour;
• wherein the arcuate contour extends from the vertex to a planar facet at the stern substructure;
• wherein the keel is configured to displace a bow wave towards a stern of the hull during forward movement of the boat hull and further configured to create distinct pressure zones for drawing the keel back into water and reducing pitching.

A keel for a boat hull, the keel comprising:

• a base extending along a centerline of the boat hull between a bow and a stern, wherein the base tapers from a planar facet at a stern substructure toward a vertex on the centerline;
• a curved segment defined between an edge of the base and an arcuate contour, the curved segment laterally extending from the vertex toward the planar facet, wherein the arcuate contour extends from the vertex to a planar facet at the stern substructure;
• wherein the base includes a trough defining a bottom-most extremity of the keel along the centerline;
• wherein the curved segment is formed as a paraboloid surface having a maximum point amidship and coplanar with the trough of the base and a lateral apex of the arcuate contour;
• wherein the keel is configured to displace a bow wave towards a stern of the hull during forward movement of the boat hull and further configured to create distinct pressure zones for drawing the keel back into water and reducing pitching.

A modular keel arranged along a centerline of boat hull for displacing a bow wave towards a stern during forward movement of the boat hull and creating distinct hydrodynamic pressure zones to draw the keel back into water, the keel comprising:

• a base extending along the centerline, wherein the base tapers aft to fore toward a vertex coplanar with the centerline, the vertex being defined by opposing edges of the base;
• opposing curved segments arranged outboard from the base and laterally extending from the vertex toward a stern substructure, wherein each curved segment is defined between an edge of the base and an arcuate contour;
• wherein the distinct hydrodynamic pressure zones are created at the following areas of the keel during forward movement of the boat hull:
• a fore transitional area formed at the vertex and arranged to create a first high pressure zone;
• an intermediate transitional area formed between the vertex and the stern substructure and arranged to create a low pressure zone along the keel;
• and
• an aft transitional area formed at the stern substructure and arranged to create a second high pressure zone;
• wherein the curved segments are configured and dimensioned to converge with circumjacent segments of the boat hull in a blended region;
• wherein the arcuate contour extends from the vertex to a planar facet at the stern substructure;
• and
• wherein the arcuate contour blends with a periphery of the planar facet, the periphery being adjacent to a stern substructure.