Hi Annette,
East Riding archives had a project to digitise many of the drawings of the Cook, Welton and Gemmell shipyard in Beverley where Kingston Peridot was built. They have a website called Trawling through time which gives a lot of information about the project and there is a link to it here Trawling through time
Kingston Peridot is one of the examples they show on the website and there is a link to the drawing here Kingston Peridot. I don't know if there is enough information for you on that drawing but there may be others or drawings of other similar vessels built around that time you could have a look at. You might need to contact or visit the archive centre at the Treasure House in Beverley to find out whats available or you may be able to search the records on line.
If anyone is thinking of building a model of a Hull (or Fleetwood) trawler I am sure there would be lots of interesting and useful information available on the Trawling through time website.
Gareth