Notes.--In this type the usual Astra style, rear of gas bag, is entirely done away with. Surface of each elevator is 18m squared, of the rudder 33m squared. There are 2 petrol reservoirs, each of 180 litre capacity. ~Weights.~ lbs. (kgs.) Crew 838 (380) Details 1367 (620) Tools, etc. 220 (100) "Lest d'altitude" 2205 (1000) " securite 661 (300) ---- ------ Total 5291 (2400) ASTRA-TORRES I. [Illustration] ~Length,~ 157 feet (47.72 m.) ~diameter,~ 33 feet (10 m.) ~volume,~ 68,150 c. feet (1,930 m cubed.) ~Ballonets.~--Volume, 11,300 c. feet (320 m cubed.) ~Nacelle.~--Length, 18 feet (5.50 m.) Breadth, 5 feet (1.50 m.) Height, 6-1/2 feet (2 m.) ~Useful lift.~--1,219 lbs. (553 kgs.) ~Motor.~--1 Chenu, 55 h.p., at 1,380 r.p.m. Clutch, Ruban. ~Speed.~--31 m.p.h. (50 km.) ~Endurance~ _about_ 5 hours. ~Propeller.~--1 in rear of nacelle. Diameter, 14-3/4 feet (4.50 m.) Notes.--The special feature of this type is that it is constructed in three lobes, two below and one above. This particular ship is merely experimental, and is known as a "Vedette." Three models of it are to be obtained, (1) this 55 h.p. of 1,930 m cubed. volume. (2) a 75 h.p. of 2,000 m cubed. nominal volume. (3) a 110 h.p. of from 3,000-3,500 m cubed. volume. This latter is designed to have two propellers instead of one. Larger editions of the type are also projected as follows:-- ~"Scouts:"~ 4500-6300 m cubed. of 200 h.p. (2 motors.) ~"Transaeriens:"~ 7,000-8,000 m cubed. of 400 h.p. (2 motors.) ~"Dreadnoughts:"~ 12,000 m cubed. or so, of 750 h.p. (4 motors.) [Illustration: UDS] =CLEMENT-BAYARD CLASS.= Usines Clement-Bayard, 33, quai Michelet, Levallois-Perret (Seine). These dirigibles closely resemble the _Astra_ class in some main particulars; but (excepting _I_) differ from them in the sharp sterns and absence of stabilisers on stern. The ships of this class are:-- 1 CLEMENT-BAYARD I (Kommissionny) Russian Military 2 " II British Military (wrecked) 3 " 4 " IV (_Adjutant Vincennot_) French Military 5 " V (_Fleurus_) " 6 " VI Private 7 " VII French Military (_building_), To be of 17,000 m cubed. ADJUTANT VINCENNOT. Military. (1911.) (Clement-Bayard IV.) [Illustration] ~Maximum length,~ 251 feet (76.50 m.) ~maximum diameter,~ 43 feet (13.22 m.) ~volume,~ 7,500 m cubed. ~Total lift.~--Nearly 8 tons (8,000 kgs.) ~Useful lift,~ 2-3/4 tons (2717 kgs.) ~Gasbags.~--Continental rubbered fabric. Weight, 380 grammes per m squared. Strength 1,000 kg. per metre. Leakage under 10 litres per m squared per 24 hours.