TY - BOOK ED - Witherby Seamanship International, TI - 21st century seamanship SN - 9781856096324 (paperback) PY - 2015/// CY - Livingston PB - Witherby Seamanship International KW - Seamanship KW - Handbooks, manuals, etc N1 - Includes bibliographical references (page vii-ix) and index ER -