 The accommodation for her crew and other embarked personnel were considered especially comfortable for the era.She could carry 99 tons of boiler water, 75 tons of drinking and cooking water, and 325 tons of fuel, giving her a cruising range of 7,000 nautical miles (8,056 statute miles; 12,964 km) at a speed of 12 knots (13.8 mph; 22.2 km/hr).To avoid electrical interference with her sensitive hydrographic surveying equipment, "Explorer"′s deck machinery and major auxiliary equipment all was driven by high-pressure steam.