Having done some reading I have found this 'tiny' thing https://warhammer40k.fandom.com/wiki/Viper-class_Scout_Sloop which would then be orkified into a https://wh40k.lexicanum.com/wiki/Grunt_Assault_Ship for some proper orky boarding action. Crew it with https://dow.fandom.com/wiki/Kaptin_Bluddflagg who's been promised good looting, fighting, and a cool hat, and jobs a good un