gulfstar 43 sailboat data

Gulfstar 43 ms

The gulfstar 43 ms is a 43.33ft masthead sloop designed by lazarra and built in fiberglass by gulfstar yachts between 1971 and 1973., 10 units have been built..

The Gulfstar 43 ms is a light sailboat which is under powered. It is reasonably stable / stiff and has a low righting capability if capsized. It is best suited as a coastal cruiser.

Gulfstar 43 ms for sale elsewhere on the web:

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GULFSTAR 43 Detailed Review

If you are a boat enthusiast looking to get more information on specs, built, make, etc. of different boats, then here is a complete review of GULFSTAR 43. Built by Gulfstar Yachts and designed by Vince & Richard Lazarra, the boat was first built in 1976. It has a hull type of Long Keel and LOA is 13.21. Its sail area/displacement ratio 14.01. Its auxiliary power tank, manufactured by Perkins, runs on Diesel.

GULFSTAR 43 has retained its value as a result of superior building, a solid reputation, and a devoted owner base. Read on to find out more about GULFSTAR 43 and decide if it is a fit for your boating needs.

Boat Information

Boat specifications, sail boat calculation, rig and sail specs, auxillary power tank, accomodations, contributions, who designed the gulfstar 43.

GULFSTAR 43 was designed by Vince & Richard Lazarra.

Who builds GULFSTAR 43?

GULFSTAR 43 is built by Gulfstar Yachts.

When was GULFSTAR 43 first built?

GULFSTAR 43 was first built in 1976.

How long is GULFSTAR 43?

GULFSTAR 43 is 11.94 m in length.

What is mast height on GULFSTAR 43?

GULFSTAR 43 has a mast height of 11.8 m.

Member Boats at HarborMoor

• Rudder Delamination is a big issue with these.
• Encapsulated lead ballast tends to separate from the fiberglass.
• Decks love to Craze with age.
• Osmotic Blistering on most models can be quite severe.

Gulfstar 60

Gulfstar 54, gulfstar 53, gulfstar 50, gulfstar 47, gulfstar 45, gulfstar 44.

• Lots of through-hulls, and many outflows are at the waterline.
• Through-hulls are separate from the valves; not sea-cocks.
• Through-hull valves were all gate-valves.
• Rub-rail is attached with screws that come right through the hull. Maybe there's no other way to do it ?
• Interior is full of drawers, which are space-wasters.
• Lots of formica over particle-board: low-maintenance, but hard to fix if the particle-board starts swelling.
• My boat has twin berths in aft cabin; couples want queen bed.
• Water pools on deck a little just forward of the aft scuppers.
• When water drips from the rudder stuffing box, there's nowhere for it to go. Probably common in many boats.
• A builder's usual inattention to maintainability: cabinetry built on top of wiring, wiring to lights sometimes prevents removing headliners, bulkhead built across top of fuel tank fittings, shower floors impossible to remove without demolition, no access to tops of water tanks, access hole in top of fuel tank is tiny, nails used to fasten floorboards down.
• No backing plates on the cleats.
• Some stanchions have backing plates, some don't.
• Cleats and stanchions attached through cored parts of hull, not solid laminates.
• Teak trim is attached exactly backward: the screw-holes generally aren't caulked, and the long runs of wood are caulked-on.
• Fuel tank vent line is too narrow; have to add fuel slowly. Hard to replace with thicker line: bulkhead built on top of fuel tank.
• Access holes/port into top of fuel tank is tiny; useless for serious cleaning.
• No access holes/port into tops of water tanks.
• Opening ports are plastic: they tend to break after a lot of routine use.
• Electrical panel quirks: no fuse on some circuits, and no fuse or switch on cabin interior light circuit.
• Extra ballast for genset was glued down with tons of epoxy and then tar slathered over the top, in a cramped space; very hard to remove.
• Lots of space.
• Great engine compartment (can almost stand up straight in it).
• Wide side-decks, and lots of uncluttered deck space in general.
• 6-cylinder Perkins engine is great.
• Hull seems very solid; decks are in great shape for 31-year-old boat.
• The teak plate at the top of the compression post was one piece; no way to remove it without splitting it into two pieces along the grain. I did that.
• The headliner wood in this area seems to be one 1/2-inch sheet, glued to underside of the deck. Not sure. Expected a separate 1/4-inch sheet with the fabric glued to it, as there is elsewhere in the boat, but that doesn't seem to be the case.
• After 31 years, the compression post has some pitting near the top (from saltwater leak, I'm sure), but seems sound at top and bottom.
• The bolt-heads underneath the deck (two through-bolts fasten the mast base to the deck) have no backing plates or even washers on them; they seat onto underside of deck fiberglass.
• The deck hole for the compression post fits it very tightly; I think they should have left room to work some caulk into there.
• Leak is from water getting between deck and very bottom of metal mast base; I wonder if they didn't caulk very well there. Certainly there is no caulk to be seen bulging out between metal and fiberglass. The water is coming down the forward bolt and the deck hole for the compression post.
• Mast base is a separate piece from the mast (probably standard); the mast base sticks up about 2 inches above deck level inside the mast. Don't see any fasteners holding them together, just the weight of the mast. Would have to lift mast up off the base before you could get to the nuts on the bolts that hold the base to the deck.

Gulfstar 43

Gulfstar 41, gulfstar 40, gulfstar 39 / sailmaster 39, gulfstar 37, gulfstar 36, hood custom gulfstar 40, sailmaster 47, sailmaster 40.

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Gulfstar Yachts Gulfstar 43

General Data

Shipbuilder:, see also: boats for sale.

• Beneteau OCEANIS 430
• COMAR GENESI 43
• BENETEAU OCEANIS 43
• Beneteau OCEANIS 423 CLIPPER

Overall length:

Waterline length:, displacement:, straightening:, sail details mq.

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• Sailboat Guide

1972 Gulfstar 43 Center Cockpit Trawler Hull

• Description

Seller's Description

43 ft Gulf Star Motor Sailer built in 1972. One of five built. Hard top, fully enclosed, great live-aboard boat. Two cabins and two baths. On a trawler hull. Moored in deep freshwater creek for the last 15 years. For additional $119,000, 90 ft dock and 1/2 acre lot available on the freshwater creek in the Panhandle of Florida. For further information please contact me.

Rig and Sails

Auxilary power, accomodations, calculations.

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

SA/D = SA ÷ (D ÷ 64) 2/3

• SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
• D : Displacement in pounds.

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Ballast / Displacement * 100

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

• D: Displacement of the boat in pounds.
• LWL: Waterline length in feet

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

• D: Displacement of the boat in pounds
• LOA: Length overall in feet
• Beam: Width of boat at the widest point in feet

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

CSV = Beam ÷ ³√(D / 64)

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