TubSub

Another toy commissioned by my 3 year old. Loosely based on a US Skipjack class nuclear attack sub. 2 nickels are used as assembly dowels. The fit of the parts are precise, the fin section can be reduced in scale by 3-5% to accommodate an easier fit. Provisions for ballast weight will accept more nickels and are retained by the elastic band. The hole in the sail can be plugged at the desired point of flooding with a common toothpick.