Seabook on PCSeabook, coming from the developer Ozgur Dogan GUNES, is running on Android systerm in the past. No more eyeing the battery or frustrating calls at the wrong time any more.Just enjoy Seabook PC on the large screen for free！Seabook IntroductionSeabook is an information and knowledge source for marine professionals, sailors as well as sea enthusiasts.This easy-to-use, accessible-offline mobile app serves as a reference tool for key elements of Ship stability, Navigation, Shipmanagement, Shipboard Safety, COLREG and Marine engineering, and is designed for seafarers, cadets, maritime students and master mariners alike.Seabook contains details on;COLREG (International Regulations for Preventing Collisions at Sea)GMDSS (Global Maritime Distress and Safety System)Marine MeteorologyShipboard SafetyPersonal HealthInternational Code of SignalsShipmangement & BusinessMarine EngineeringNavigation at SeaShip StabilityRopeworkCountry FlagsKnotsDeveloped byCapt. Ozgur Dogan GUNESwww.ozgurdogangunes.com