Survival platform

A survival platform, comprising two flexible outer sheets, the outer sheets each having a circumference and being sealed together at their circumferences to define a void therebetween, the survival platform further comprising an inner flexible sheet interposed between the outer sheets and dividing the void into two sub-voids, and means for inflating the survival platform by introducing a gas into the void to increase a gas pressure therewithin and force the inner sheet through a breach in the outer sheets, thereby to block the breach and reduce the level to which gas escapes through the breach, the survival platform further comprising a plurality of reed members, each reed member comprising an elongated body having a length, each reed member joining an outer sheet to the inner sheet along the length, with both outer sheets being joined to the inner sheet by reed members, in which the reed members are provided in pairs, with one reed member of each pair joining one of the outer sheets to the inner sheet and the other reed member of each pair joining the other outer sheet to the inner sheet at the same position on the inner sheet but on the opposite face.