Dimensions ITEM Length overall - bowsprit to taffrail 226ft 6in 69.0m Length on the lower gun deck 186ft 0in 56.6m Length of the tread of the keel 151ft 3. For comparison, this would be equivalent to the cost of building an aircraft carrier today. Building Costs At the time of her launching in 1765, cost £63,176. The lines of the Victory are based on those of the Royal George launched in 1756.