Saturday, April 7, 2012

Design 2547 - Trident 164' High-Speed Motoryacht


This high-speed aluminum trideck motoryacht was developed in 1990 for the founder of Trident Yachts. To achieve a speed of +34 knots, triple 16-cylinder MTU 16V396TB94 turbocharged diesels engines were envisioned, each rated at 2,900 continuous horsepower driving Kamewa 90S62 water jets. The outboard water jets were to be installed with steering and reverse buckets but the center-line water jet would be fixed and used as a boost engine in general.

Kamewa S3 Series Water Jet w/Steering and Reverse

Here are the designer's Comments.


Here are the plans.


Principal Dimensions
LOA 163'-9"
LWL 142'-0"
Beam 28'-3"
Draft 6'-0"
Displacement 530,000 lbs

Friday, April 6, 2012

Design 2565 - 100' Steel Racer/Cruiser


This preliminary design was developed in 1990. The boat was to be built in steel as this was the client's preference. The most notable thing about the general arrangement is the generous engine room, located at the mast and with full standing headroom. It would be a real luxury to have such an engine room. It looks like it was achieved at the expense of a generous captain's cabin.


Principal Dimensions
LOA 100'-0"
LWL 80'-0"
Beam 25'-3"
Draft 12'-4"
Sail Area 4,252 sq ft

Thursday, April 5, 2012

Design 17 - Nancy


Here we have Nancy (US60), one of the truly great S&S 6-meter racing yachts. Nancy was designed to compete in the 1932 British-American Cup. That's Olin at the helm during that series, racing on the Solent. I am also pretty sure that is Rod in the pit.

The boat was built by Henry B. Nevins of City Island, New York. Her construction was very unusual: 1/2" mahogany planking outside, 1/4" spruce inside, both laid longitudinally and screwed together from the inside.

She makes her home in England and is still very actively racing today, 80 years after her original launch date.

Here is the sail plan.


Principal Dimensions
LOA 36'-9"
LWL 23'-3"
Beam 6'-8"
Draft 5'-5"


We've got a great magazine article about this boat, too long to post here. If interested please just email me and I would be happy to shoot you a digital copy. Simply email me at bjohnson@sparkmanstephens.com.

Tuesday, April 3, 2012

Design 2390-C5 - Ananda


Here is the final of the total of 20 S&S boats built by Cantiere Navale Carlini of Rimini, Italy between 1956-1984. She is a cold molded cruising boat, based on an existing design, #2390. This is a very utilized design, including the Stevens 47, Hylas 47, Stevens 50 and Stevens 51 all in different configurations: aft cockpit, center cockpit and pilothouse. In all 9 different models have been developed from the same set of Lines, and as production boats numerous hulls of each. This is the only one to be built of wood and as a one-off.

Here are the plans.


Principal Dimensions
LOA 49'-11"
LWL 37'-9"
Beam 14'-4"
Draft 7'-0"
Displacement 35,057 lbs
Ballast 12,500 lbs
Sail Area 1,062 sq ft

Monday, April 2, 2012

Design 2580 - Baltic 58


The Baltic 58 was introduced in 1991 to fill the gap between the Baltic 52 and Baltic 64. Like the other Baltic models designed by the firm, the 58 was designed in conjunction with Baltic's chief designer, Tor Hinders. Sparkman & Stephens was responsible for the naval architecture and the design of the hull shape, appendages and sail plan. 4 boats have been built to the design.

Here's a design review from Cruising World magazine.


Here are the plans including 2 alternate layouts.


Some interior images.


Principal Dimensions
LOA 58'-6"
LWL 47'-7"
Beam 16'-7"
Draft 10'-6"
Displacement 41,900 lbs
Ballast 17,500 lbs
Sail Area 1,605 sq ft


Sunday, April 1, 2012

43-Meter Trideck Motoryacht - Preliminary Design


This seems to be a popular size as we have done a handful of proposals in this size range. This trideck motoryacht was designed in 2009. She is designed with a steel hull and aluminum superstructure. The boat is a full displacement hull, powered by twin Caterpillar C32s.

Here are the general arrangements for upper and lower decks.


Principal Dimensions
LOA 141'-0"
LWL 124'-7"
Beam 26'-7"
Draft 8'-6"

Design 2717 - Residential Barge


This floating home was designed to lie off of a private island. The island is a nature preserve and construction is not allowed. The design brief was for simplicity. The upper deck consists of the owner's suite with large wardrobe and head.

The main deck includes an outdoor terrace, access to the water, great room with seating, cooking and dining areas and two guest staterooms.

All glass panels on both decks are double sliding doors so the entire space can be opened up.


Principal Dimensions
LOA 90'-0"
Beam 30'-0"
Draft 2'-0" (light ship)