This work (model) was build 1955, it represent one the oldest one, comparing to the recent ones, you can see the progress with the experience.
command ship equip with intelligence sensors. build in 1972
ocean tug and rescue ship build around 1995
Fast support ship refueling and supply also troop assault support
replica on 2nd world war Italian navy light cruise, Giuseppe Garibaldi rebuild in 1964 as a missile cruise with capability to lunch intercontinental missile Polaris. This was build by me in 1975 and is only 6" long