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Priority to ES0078081UpriorityCriticalpatent/ES78081Y/en
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Publication of ES78081YpublicationCriticalpatent/ES78081Y/en
An improved pneumatic raft, characterized in that it is associated with a keel constituted by at least one tube (8), firmly attached to the outer face of the bottom (4) of the raft in the longitudinal direction and adapted to be inflated with air, gas or water to pressure until it is strong enough to act as a keel of rigid material. (Machine-translation by Google Translate, not legally binding)
Improvements in the construction of tubular boats with supplementary fund of plastic or similar wood. (Machine-translation by Google Translate, not legally binding)