* WHAT...Seas 7 to 8 ft expected. * WHERE...Northern Lynn Canal, Cape Edgecumbe to Cape Spencer from 15 to 80 NM and Cape Spencer to Cape Fairweather from 15 to 85 NM. * WHEN...From 4 AM to 6 AM AKDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.