The fastest diesel boat in production is the XSR48, a 157.5-m (48-ft) stiff Kevlar/carbon-fibre monocoque hull, 800 bhp race boat, which can achieve speeds in excess of 161 km/h(100 mph) with its race-tuned engine option. Developed by XSMG Marine (UK) and launched in Lymington, Hampshire, UK, in December 2006, each of the 100 due for production will be priced at £1 million ($2 million).