The Beta transportships were designed to carry solid goods, anything from foodstuff to weapons. The kit includes 5 ships that could be used for existing spaceship games. Stems and bases not included. Each ship is 16.12mm wide, 17.62mm tall, and 41.62mm long.
Shapeways seems to have some issues with the posting the SketchUp picture, so check it out here: http://i1299.photobucket.com/albums/ag77/Stefmanovic/transportshipbeta_zpscf94a4b2.jpg