Abstract: This invention concerns an apparatus and method for perforating a beam. The apparatus comprises a main longitudinal support structure to support the beam. A cutting zone is located along the main longitudinal support structure. Controllable translating means translate the beam longitudinally in the cutting zone. A detector detects a presence of the beam in the cutting zone and in response, a router is controllably moved substantially orthogonally and transversally with respect to the beam, while the beam is translated. The combined controlled movement of the router and the beam results in a perforation of the beam following a predetermined perforation pattern.

Abstract: This invention concerns an apparatus and method for perforating a beam. The apparatus comprises a main longitudinal support structure to support the beam. A cutting zone is located along the main longitudinal support structure. Controllable translating means translate the beam longitudinally in the cutting zone. A detector detects a presence of the beam in the cutting zone and in response, a router is controllably moved substantially orthogonally and transversally with respect to the beam, while the beam is translated. The combined controlled movement of the router and the beam results in a perforation of the beam following a predetermined perforation pattern.

Abstract: A rescue boat capable of use on ice, strewn water, water, snow and dragged over rigid surfaces is described. The rescue boat comprises a hull fabricated from a lamination of fiber materials having a specific orientation to provide flexibility for shock absorbing. An inner keel beam is retained along a central longitudinal axis of the hull on an inner surface of the hull. A transom cowling extends across opposed sidewalls of the hull and merges into a transom wall laminated with the hull. One or more transverse seating frames are secured across the opposed sidewalls by connecting brackets and adapted to transfer impact forces with the sidewalls. One or more vertical rigid support posts are secured to the inner keel beam and an associated one of the one or more transverse seating frames for transmitting vertical impact forces between the inner keel beam and the one or more transverse seating frames.