Secondhand Mini-ships KB63 USS Greenling Modified Thresher class 1971 1/1200
A 1/1250 scale second-hand model of USS Greenling a nuclear attack submarine of the Sturgeon or Modified Thresher class (or Permit class) from the 1970s. This model has been made by modifying a Star model of HMS Dreadnought, see photograph.
The 1/1250 scale Star model of Dreadnought is oversized even for 1/1250 scale but the tall sail and long hull are very near the dimensions of a 1/1200 scale for a modified Thresher class model. The modifications made to the 4 ships included a longer hull and altered power plant but these ships were slower than the original vessels and the next class had more power and the sail was reduced in height to improve underwater speed. Nevertheless, they must have been considered successful because they remained in service well into the 1990s.