The Collaborative International Dictionary of English v.0.48:
Seamanlike \Sea"man*like`\, a. Having or showing the skill of a practical seaman. [1913 Webster]WordNet (r) 3.0 (2006):
seamanlike adj 1: characteristic of or befitting a seaman; indicating competent seamanship [syn: seamanlike, seamanly] [ant: unseamanlike]