An unusual three cylinder vertical reversing marine engine, built up from three Stuart 5A's with blued steel clad cylinders 2¼in. bore x 2in. stroke with drain cocks, cylinder head lubricators, valve chest tail shaft guides, inlet manifold with main stop and displacement lubricators, hand wheel operated Stephenson's link reverse, fabricated frame with six main bearings and adjustable propeller shaft thrust block (the rear cylinder disconnected), finished in cream and red with wood mount -- 21 x 28½in. (53.5 x 72.5cm.)