James Bond (Roger Moore) uses a Glastron Carlson CV23HT speedboat in the movie Moonraker (1979). HT stands for Hard Top. Only 300 of these hard top boats were built in 1978 and 1979, and only 3 of those were built with the custom painted silver metalflake gelcoat over gray (the 'normal' boats sold to the public had either metalflake blue or metalflake bronze color). Today only 1 of these boats is known to exist and is owned by the Ian Fleming Foundation. The boat is currently on display at Bond in Motion.
The boat in the film was customized for the film to include Q Branch gadgets. Bond's Glastron CV23HT features mines, a torpedo and a hidden hang glider (or delta wing) with which Bond escapes from his boat just before it hits the Iguazu Falls.
On the Amazon river, Jaws and Hugo Drax' henchmen chase Bond in Glastron SSV-189 speedboats. One of the actual Glastron SSV-189 speedboats used during the filming was put up for sale on Bond Lifestyle Exclusive Auctions, but wasn't sold and is still for sale. More info here.