DEADLOCK TIGHTENS IN SHIPPING TIE-UP; MEDIATOR SHUNNED; AS THE MARITIME DISPUTE CONTINUES
FMCS fails to arrange conf; Curran says unions will bargain on acceptable offer; neither side terms stoppage a strike; progress reptd in ARA-Pacific Assn talks; ships held in NYC noted; NMU outlines unions policy on defense cargoes; will let NSA designate essential ships
