A method of manufacturing a boat hull comprising: forming a foam mold of a predetermined shape and size from one or more pieces of foam; cutting, into said foam, at least one “C” channel running in a longitudinal or a lateral direction within the foam; and coating said foam with at least one layer of reinforcing fiber and resin.

A method of manufacturing a boat hull comprising: forming a foam mold of a predetermined shape and size from one or more pieces of foam; cutting at least one C-channel into said foam running in a longitudinal or a lateral direction within the foam; and coating said foam with at least one layer of reinforcing fiber and resin.

A method of manufacturing a boat hull comprising: forming a foam mold of a predetermined shape and size from one or more pieces of foam; cutting at least one C-channel into said foam running in a longitudinal or a lateral direction within the foam; and coating said foam with at least one layer of reinforcing fiber and resin.

A method of manufacturing a boat hull comprising: forming a foam mold of a predetermined shape and size from one or more pieces of foam; cutting at least one C-channel into said foam running in a longitudinal or a lateral direction within the foam; and coating said foam with at least one layer of reinforcing fiber and resin.

Provided is an apparatus for molding a shell hull made of composite material for a boat having a first mold part and a second mold part, each having a molding surface and adapted to be coupled to jointly define a concave molding cavity that extends longitudinally between a stern end and a bow end. The apparatus has a humidity sensor for detecting humidity at the first and/or second mold parts. A plurality of sensors, arranged in a respective plurality of detection positions on a detection surface extending over at least one of the first mold part and the second mold part, and arranged directly in contact therewith, produce signals representative of respective strains of the detection surface in directions substantially perpendicular to the detection surface.

A method of manufacturing a boat hull comprising: forming a foam mold of a predetermined shape and size from one or more pieces of foam; cutting, into the foam, at least one C-channel running in a longitudinal or a lateral direction within the foam; and coating the foam with at least one layer of reinforcing fiber and resin.

A method of manufacturing a submersible vessel, the method comprising: forming a foam mold of a predetermined shape and size from at least a first piece of foam having a first density and at least a second piece of foam having a second density; cutting at least one channel into the foam running in a longitudinal direction or a lateral direction within the foam; and coating the foam with at least one layer of reinforcing fiber and resin.