Gulfstar 50 KTH (1978)

Gulfstar 50 KTH Engine: Yanmar. 77 HP (2.023 hs.) Con Caja inversora nueva Year: 1978 Type: vela Flag: Beam: 4.17 mts Loa: 15.24 mts Draft: 1.80 mts Displacement: Kg

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Carlos Fandiño Fratamico

Mr. Lazzara drawing on his experience decided to produce sailboat hulls that could double as trawlers. With a different deck mold and larger engine, Gulfstar delivered 53 and 36-foot trawlers while by stepping a mast, they had 53 and 36 motorsailers. He tapped into the floating condominium mentality of the public and built exactly what would sell. The sailboats had great accommodation but poor performance with their shoal draft, short rigs, and wide beam. Other boats produced during this era include a 43 trawler and 44 motorsailer.

Gulfstar 50

Around 1975, Mr. Lazzara felt that consumer tastes were changing. Instead of beamy motorsailers, high performance yachts were coming into vogue. Gulfstar would have to evolve. They introduced a 50-foot high performance sailboat that would become one of their most famous designs, the Gulfstar 50.It was an era of evolution where they shifted from iron to lead ballast and Formica to classic dark teak interiors. They even changed their logo from a star to a wreath.

Who designed the Gulfstar 50 ? Vince Lazzara is seen here with sons Brad on the left and Dick to the right.

Vince was born and raised in Chicago  and spent his summers on the waterfront where he built small boats and sailed on Lake Michigan. Following service in World War II, he studied mechanical and industrial engineering at the University of Illinois.  After college he got a job at a foundry that made casting for the airplane industry. A year later he started his own company, Casting Engineers and supplied the same airplane customers.  On the side he made deck hardware for boatbuilders. He is credited with developing the first stainless snap shackle. In 1952 he sold his foundry business and started building fiberglass boats against the advice of his friends Henry Hinckley and Chris-Craft's Bill MacKerer. 

Beginning with Coleman Plastics he helped develop the Bounty II sailboat. Vince and his 2 partners renamed the company Aeromarine. After selling Aeromarine to Grumann, he bought control in Glass Marine Industries and renamed the company Columbia in 1960 after the twelve meter America Cup.  Vince sold Columbia Yachts in 1967 to Whittaker and signed a 3 year non compete clause. So from 1967 to 1970 he began a company called Sea Rover and built houseboats.  In 1971 he founded Gulfstar.

Hull Type:              Fin with rudder on skeg 

Rigging Type:        Masthead Sloop 

LOA:                      50.00 ft / 15.24 m 

LWL:                      39.67 ft / 12.09 m 

Beam:                    13.67 ft / 4.17 m 

S.A. (reported):      896.00 ft2 / 83.24 m2

Draft (max):             1.80 m 

Displacement:          35,000 lb / 15,876 kg 

Ballast:                      10,500 lb / 4,763 kg 

S.A./Disp.:                  14,37

Bal./Disp.:                   30.00 %

Disp./Len.:                   250.28 

Construction:              FG 

First Built:                    1975 

Last Built:                    1980 

# Built:                          172 

Builder:                        Gulfstar Yachts (USA) 

Designer:                     Lazarra 

Auxiliary Power/Tanks (orig. equip.)

Make:                Yanmar

Type:                 Diesel, 380 Lt.

HP:              77 HP (2.023 hs.) Con Caja inversora nueva

             New inverter box


Nominal hull speed: 9.3 knots

Comfort Ratio:                  38.86 

Capsize Screening Formula:         1.68 

S#:                            1.81 

Rig and Sail Particulars

I:                 50.90 ft / 15.51 m 

J:                19.10 ft / 5.82 m 

P:                43.08 ft / 13.13 m 

E:                 19.00 ft / 5.79 m 

S.A. Fore:    486.10 ft2 / 45.16 m2

S.A. Main:  409.26 ft2 / 38.02 m2

S.A. Total (100% Fore + Main Triangles)   895.36 ft2 / 83.18 m2

Est. Forestay Len.:  54.37 ft / 16.57 m 


Grey waters / Aguas grises              180 lts

Water:                                     200 gals / 757 L

Sailboat Links

Designer; Vince & Richard Lazarra

Builder; Gulfstar Yachts


Fully restored in 2007 in Fort Lauderdale (USA), rigging change, full paint, interior changes, very well maintained.

Closed cockpit with aluminum roof and closed with polycarbonate for double sun protection, ideal for ocean voyages.

Onan Generator 7.5 Kw


Outboard Mercury 4 cylinders 8 HP

Rigid Dingy 3 mts

Horizontal Windlass 1500 Watts + Delta Anchor 26 Kg + 90 mt. 10 mm calibrated chain

Solar panels 3x 180 Watts

Battery charger for 4 batteries

32 Amp single phase input.

Hot water


Sea ​​water pump

Air conditioning cold and heat

3 burner stove and 2 burner oven


220 volt 300 liter fridge

Refrigerator 12 volts 100 liters

Shower cabin

Bilge pumps

Drinking water (COMMENT ME IF IT IS POTABILIZING AND if it is, how many liters / hour

Shower and toilet exit

Cockpit table

Bathing ladder.

Electric winch

Teak cockpit

Outboard motor mounts

Stainless steel davits


Hood in good state

Kecht rig

Mainsail and Mezzana external furling

Genoa furler


Navigation data switchboard

Plotter, Radar, Depth, Wind Vane, Autopilot, VHF Radio,

 SSB (Single Side Band)


The Company deals the details of this boat in good faith but cannot assurance or warrant the accuracy of this information nor warrant the quality of the boat. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This boat is offered subject to prior sale, price change, or withdrawal without notice.