INSTALLATION OF A NEW 81000 TON FLOATING DRYDOCK
Consequent upon the installation of a new 81,000 ton floating drydock in the port of Portland, Oregon, there has been a considerable increase in the size and number of ships using the port. This traffic has emphasized the need for specialised ship assist tugs of which the reverse tractor tug Portland is the first representative. The paper presents the background, design parameters and propulsion machinery considerations for the new vessel type. Principal particulars include Length 32.8m o.a,, 30.49m b.p.; Breadth, mld. 9.91m, 10.42 o.a.; Depth, moulded 4.59m; Draught 3.96m; Propulsion machinery 2 x Model 1650H 360deg steerable Z- drives, input MCR 2 x 1700 bhp at 720 rpm.
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Supplemental Notes:
- Proceedings of the Seventh Intl. Tug Convention, 1982, London, Day 1, Paper 3, p.13 (8 pp., 4 diag., 13 phot.; and Discussion: 2 pp.)
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Authors:
- Weddle, M J
- Towers, J
- Publication Date: 1982
Language
- English
Subject/Index Terms
- Geographic Terms: Portland (Maine)
- Subject Areas: Marine Transportation;
Filing Info
- Accession Number: 00711035
- Record Type: Publication
- Source Agency: British Maritime Technology
- Files: TRIS
- Created Date: Aug 14 1995 12:00AM