They may sport rudders, fins, bulkheads, seats, eyelets, foot braces and cargo hatches. A worker egg hatches after three days into a larva. The larva hatches from the egg and consumes the food supply. It used the Mod A hull and turret designs with smaller diametered crew hatches. The egg hatches into a small winged creature that they nickname Gatchan. During the Yom Kippur War, crews kept some of the roof hatches open. A wingless first-instar nymph hatches from an egg, and may be small as 2 mm. Some of the turrets obscured the entrance hatches. Poisk is a Russian airlock module with two identical hatches. The egg hatches, revealing a baby Godzilla. It then hatches from the egg, outside the mother's body. At the end of the first season, the egg hatches into the Dragon Prince, Zym. One Sunday morning, a caterpillar hatches from an egg. All EVA hatches on the ISS open inwards and are pressure-sealing. Soviet veterans condemned the turret hatches of the early models.