TUNNEL TUBE TIDAL WAVE — Mammoth fabricated steel, double-tube section for the Interstate-95 Fort McHenry vehicular tunnel under the harbor at Baltimore was side-launched recently into the Susquehanna River following ceremonies at Wiley Manufacturing in Port Deposit, Md. The double-tube sections — each 42 feet high, 85 feet wide and about 320 feet long — represent the core of the tunnel. Wiley, a unit of AMCA International, will launch the fabricated steel sections on a one-tube-every-three-weeks schedule until delivery of the final sections early in 1983. This is the first of a total of 32 double-tube sections that will be fabricated at the Wiley yard to complete the project. Once launched, the tubes are taken by tugboat to an outfitting site in the Baltimore Harbor where they will be prepared for placement to form the tunnel under the harbor.