삼각주상단부표

Junktion Buoy, Upper End Buoy

삼각주하부단표

Junktion Buoy, Lower End Buoy

삼단공기압축기

Three Stage Air Compressor

삼등기관사

Third Engineer

삼등통신사

Third Wireless Operator

삼등항해사

Third Officer

삼상

Three Phase

삼색등

Tri-colored Light

삼중안전유리

Triplex Safety Glass

삼추진기선

Triple Screw Vessel