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left: radar antenna OFTHE"MORAN ' is located at peak of foremast. below: chief mate f. c. schweigel operates the radiomarine radar as j-uank belford, vice president of the MORAN TOWING COMPANY, (CENTER) AND SALES ENGINEER B. E. SCANLAN OF RADIOMARINE WATCH THE PROCEDURE. TUGBOAT RADAR Radiomarine Unit Aboard the Edmond J. Moran Speeds Passage of Tows Through Rircr and Harbor Channels TORTUOUS river channels, nu- merous bridge abutments, tricky tides and a confusion of har- bor shipping, once formidable ob- stacles faced in fog and darkness by the skipper of the tugboat Ed- mond J. Moran while hauling barge loads of chemical refuse from Sayreville, N. J., to ocean dumping grounds well off the Jersey coast, are scarcely more than normal navi- gating problems since the installa- tion of Radiomarine radar equip- ment aboard the Moran. With the radar scope revealing the position of every detail of the channels and the landmarks bordering them, the skipper is able to follow his course in all weather as confidently as though he had daylight as his ally. The route followed by the Ed- viond J. Moran. a 1900 h.p. diesel- electric tug, leader of Moran's deep- sea fleet, gives the radar unit a constant opportunity to prove its value. Starting at the plant of the National Lead Company on the Raritan River near Sayreville. the tug picks up a 260-foot specially constructed barge loaded with 300 tons of chemical waste. The river channel that must be followed aver- ages only 270 feet in width with clearances between bridge abut- ments of less than 150 feet, leaving little margin for error. Once be- yond the river mouth the tow heads out into Raritan Bay. through Sandy Hook and South Channels to Scotland Lightship, then 13 miles to the designated dumping area. The total distance of the haul is 33'l. niil«s. most of it through waters that re(|uire at all times a constant watch of anchored and moving vessels, buoys, markers and shifting currents. Unaided by radar, the progress of the tow in fog and at night was often slow and pre- carious, thereby adding to the 13 hours normally required for each round trip. "The course followed by the Moran," said Frank Belford, vice president of the Moran Towing Company, "is a severe test of the value of radar as a navigational aid. The Radiomarine unit is doing [2 0 RADIO AGF-