Shipkiller by Justin Scott. Widely regarded as one of the best modern maritime, sailing books ever written
http://www.amazon.com/Shipkiller-Novel-Justin-Scott/dp/1605984655/ref=sr_1_1?s=books&ie=UTF8&qid=1380338687&sr=1-1
Any of the Hammond Innes books. I particularly liked Campbell’s Kingdom and the Wreck of Mary Deare but all of his books were good.
http://www.amazon.com/s/ref=sr_pg_3?rh=n%3A283155%2Ck%3Ahammond+innes%2Cp_n_feature_browse-bin%3A2656022011&page=3&keywords=hammond+innes&ie=UTF8&qid=1380339178
Any of the James Doss series particularly the Charlie Moon portion. http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dstripbooks&field-keywords=james+doss&rh=n%3A283155%2Ck%3Ajames+doss
Jan De Hartog, most particularly The Captain and The Commodore which are about sea tugs.
http://www.amazon.com/Jan-De-Hartog/e/B001IOBP4C/ref=sr_tc_2_0?qid=1380339622&sr=1-2-ent