@misc{Walton_Thomas_Know,
 author={Walton, Thomas},
 howpublished={online},
 publisher={Charles Griffin and Company},
 language={eng},
 title={Know your own ship : a simple explanation of the stability, trim, construction, tonnage and freeboard of ships, together with a fully worked-out set of the usual ship calculations (from drawings)},
 keywords={okrętownictwo, budownictwo okrętowe},
}