ORAC. The measurement unit of the Double Decker Bus could become a new Defence Standard, along with Nelson's Columns and Blue Whales.
Ministry of Defence | Defence News | Equipment and Logistics | Astute begins sea trials
Measuring nearly one hundred metres from bow to stern, Astute is longer than ten London buses and, when fully stored, will displace 7,800 tonnes of sea water, equivalent to 65 blue whales