DeJong and Lebet, Inc.

Serving the marine industry since 1968.

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Classic 1920’s Motor yacht MARINER III Certified by U.S. Coast Guard

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The Mariner III is still available for charter both in New England and in South Florida, depending on the time of year.

Following is the text from the press release on this vessel following certification:

The motor yacht MARINER III recently completed the process of certification by the United States Coast Guard under Subchapter T, "Small Passenger Vessels Less Than 100 Gross Tons". MARINER III is a classic wood—constructed motor yacht built in 1926 by Winslow Marine Rail & Shipbuilding near Seattle, Washington, and designed by well-known Naval Architect of the times, L.E. Geary. She measures 116’ x 18’ x 13’ x 8’ draft. She is certified to carry 125 passengers on a protected waters route.

DeJong and Lebet, Inc., Naval Architects, Jacksonville, Florida provided design and consulting engineering services for the certification project. These services included tonnage, stability, and electrical system engineering and calculations. The reduction of the gross tonnage to less than 100 gross tons was a particularly challenging problem due to the size of the vessel. DeJong & Lebet, Inc. was able to accomplish this with minimum effect on the below decks spaces.

MARINER III operates out of Manhattan at World Yacht on Pier 62 at the foot of West 23rd Street on the Hudson River. Captain Sean Kennedy of Biloxi, Mississippi runs strictly private charters aboard MARINER III such as cocktail parties, weddings, corporate entertaining, etc. She can accommodate smaller size sit-down dinner parties of up to 80 guests. MARINER III has had many interesting celebrity charters, and is the yacht setting for numerous photos in recent "Victoria’s Secret" Women’s Lingerie & Clothing catalogs. Her first charter as a certified vessel was a birthday celebration for actress Brooke Shields. MARINER III is featured in an upcoming episode of T.V. Soap Opera "All My Children", and is under contract to appear in the upcoming film "WIND", being shot in Newport, Rhode Island this summer.

MARINER III was completely refitted and restored in 1979—80, by the Kennedy Engine Co. of Biloxi, Mississippi. She is powered by twin GM 12V-71N Detroit Diesels. Electrical power is provided by 50KW and 40KW GM 4—7lN generator sets. All the engines were furnished by Kennedy Engine Co. during the refitting.

Unlike some of the other Coastal route classic motor yachts, MARINER III was designed for Ocean crossings, as evidenced by her deep draft and heavy hull structure. The original Owner, Capt. James Griffiths, of Griffiths Steamship Company, traveled to China to personally select the lumber for her construction. The vessel’s hull is planked with 3" thick teak, and her framing is a very strong wood called yackle.

The vessel cost approximately $225,000 to build in 1926. Famous actor John Barrymore once boarded the yacht and insisted on purchasing the vessel. Capt. Griffiths refused to sell her. However, he did put Barrymore in touch with the Naval Architect, L.E. Geary, and Barrymore built a sistership.

The majority of the certification work was completed by Captain Sean Kennedy1 his crew, and various sub contractors right at dockside. The vessel was hauled to allow for bottom inspection and credit dry-docking for the United States Coast Guard certification. Inspection by the Coast Guard was handled out of the New York Marine Inspection Office at Battery Park in Manhattan. Drawings for the project were completed by Marine Management, Inc. of Ocean Springs, MS and DeJong & Lebet, Inc.

MARINER III is the 14th former charter yacht certification project for DeJong & Lebet, Inc. The need to certify charter yachts, which formerly operated uninspected under bareboat charter agreements, was brought about by determination by the Coast Guard that these bareboat charter agreements were not valid, and the vessels were illegally carrying "Passengers for Hire" without proper certification. Certification projects have been completed for contemporary yachts, as well as classic antique yachts, and have included wood, steel, aluminum and fiberglass hulls.
































       This page last edited on  07/09/2010