Page 19: of Maritime Reporter Magazine (August 1981)

Lead unit of three-barge tow built by NABRICO for

Coastal Towing, Inc., Texas, begins its water journey to Houston at the Nashville, Tenn. shipyard. Barge is part of two integrated, three-barge petroleum tows completed recently by NABRICO for the Texas company. of The American Ship Building Company,

Tampa, Fla. Headquartered in Nashville, the company has been in the marine field for more than 60 years and is primarily con- cerned with the design, engineering, and construction of grain and coal barges, deck- barges, liquid tank barges, cement barges, and drydocks. NABRICO is a major supplier to the entire marine industry of marine deck hardware. The company, which has plants in Nashville and Ashland City, Tenn., pio- neered in the design and building of much of the modern equipment used on rivers today. 33rd Annual Gulf Section

Spring Meeting Featured

Six Interesting Papers

Pictured at the Spring Meeting of the SNAME Gulf

Central Section are (left to right): Bill Mead, Papers chairman; authors R.R. Nachlinger, G.L. Petrie, and

F.Y. Michael.

The 33rd Annual Spring Meeting of the

Gulf Section of The Society of Naval Archi- tects and Marine Engineers (SNAME) was held at the New Orleans Hyatt Regency

Hotel.

The technical section began with a paper on "Assessment of Weather Constraints on

Operational Planning and Scheduling," by

G.L. Petrie of Hoffman Maritime Consult- ants, Inc. This paper described the proce- dures developed to systematically assess weather-related downtime in offshore oper- ations. The second paper, "LOOP—the First

Domestic Deepwater Port," by G.A. Works, project manager, offshore facilities, discussed the design criteria, the model testing and the technical aspects of the Louisiana off- shore oil port LOOP. The final morning pa- per, "Towing Resistance Estimation of Off- shore Construction Barges," by Richard Y.T.

Dai and U.N. Chen of Brown and Root Inc., showed how the residual resistance coeffi- cient CR is directly related to the hull form: bow, stern, and midship sections, etc.

Bill Mead of McDermott Inc., Papers chair- man, presented Certificates of Appreciation to the authors at the luncheon. Guest speak- er was Gasper J. (Buddy) Stall, Creole En- gineering, Inc., who gave one of his infor- mative talks on the history of the Mississippi

River, including the first use of the steam- boat.

The afternoon technical session began with a paper "A Fluidized Bed Combustion for

Use on Inland Waterway Towboats," by

Joseph W. Janoush and David T. Williams of Janoush Marine Inc., and Anthony Licausi of Foster Wheeler Corporation, which dis- cussed the possible advantages of coal over oil in the near future. The following paper, "A New Hull Form to Improve Wave Re- sponse Characteristics for Marine Construc- tion Barges," by F.Y. Michael, Levingston

Shipbuilding Co., presented the conceptual foundation and outline of a new hull form developed specifically for improving wave response characteristics of marine construc- tion barges. The session concluded with a paper, "Some results on the Response of

Moored Vessels," by R.R. Nachlinger of

Ultra Marine Inc., and R. Habegger of Mc-

Dermott Inc., predicting the response of a vessel to a prescribed environment and, sec- ondly, what action can be taken with the mooring system to provide desired results.

A dinner-dance for the guests, held in the

Hyatt Regency's ballroom, completed the day's activities.

Cost saving assembling methods

The conversion of the cable-layer barge "Skagerrak" to a full-fledged, self-propelled seagoing vessel involved, among other things, the building of a new bow of approximately 650 tons of steel.

The pictures show the use of two Kamag trailers putting a 135 tons bottom block into exact position.

The use of Kamag trailers in this kind of operation keeps time and cost to an absolute minimum.

Amsterdam Drydock Company

Amsterdamse Droogdok Maatschappij BV

Klaprozenweg 89, Amsterdam

P.O. Box 3006. 1003 A A Amsterdam

Phone: 020 - 5209911, Telex: 11476

ADM representative for the U.S.A.:

T.A.S.T. Corporation, 150 Hinchman Avenue, Wayne, NJ 07470, tel. (201)942-0754, telex 133 395

Amsterdam

Drydock Company

Repair Highlights

August 1, 1981 Write 5101 on Reader Service Card 21