Still a huge gap in the market for a more detailed illustration and aircraft carrier options for Springsharp 4.0. That one should be lightly commercial though; $10 or so. Number of hangers, hanger height and area, lift capacities limited by year of production and all that good stuff. Top weight of equipment and aircraft on each deck seems like an important design consideration that is hard to eyeball. Plan, end and sides views with a summary would be splendid for illustrating an AH.(^^^) Springsharp is clumsy with aircraft carriers, but it can get you in the ballpark within 10% of RTL expected values.