A boat propeller is a device, usually of metal, turned by a vessel's engine. The shape of its blades convert rotation into thrust, moving the boat forward.
The propeller is attached to an engine's power transmission component, whether traditional shaft, saildrive, Z-drive, outboard or other. Their helicoid shape results in a pressure differential between the fore and aft sides of the blades as they rotate, creating the thrust to move the boat forward. They are made of bronze, aluminum, cupronickel or, less often, of plastic.
Blade pitch indicates the propeller's angle of attack with respect to the water. This affects the speed/power relationship and must be adapted to engine characteristics. Variable pitch models can be adjusted to provide maximum efficiency and reduce fuel consumption. Folding propellers have blades which fold together when not in use. This reduces drag, providing better performance for vessels under sail.
Choice will depend on boat type, engine make, model, power and transmission characteristics, including shaft diameter. For sailboats, cruising versus racing use also will affect selection.
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Surface piercing boat propeller (6 blades) ROLLA Twin Disc
Submerged Propellers are designed with a computer panel code method allowing the entire 3-D study and optimization of the geometry. To properly interface the propeller with its intended application the hull lines of any...
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Boat propeller (3 blades) P3B (MAX. 10 KNTS), P3C MAX. 16 KNTS) VETUS
A propeller is possibly the most essential component of a motorboat and very important for sailing boats too. It requires a lot of attention, both by the naval architect and by the propeller manufacturer. "Specialists", who are able to tell you "off the cuff" what type of propeller your boat requires, simply do not exist. VETUS makes good use of an especially developed computer programme, which ensures...
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Outboard and sterndrive propeller for boats (3 blades, aluminium) 01956-0909 Eval
The Rascal series (Aluminum) features increased blade...
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Folding boat propeller (3 blades, shaft-drive or saildrive) Volvo Penta
Volvo Penta's 3 & 4-blade folding propellers are perfect for sailboats with minimal drag under sail combined with effective...
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Trophy Plus The Trophy Plus has a four-blade steel design that provides incredible bow lift for bass and flats boats that run at high drive heights. Its...
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Folding boat propeller (3 blades, shaft-drive or saildrive) ZINC ANODE Gori Propeller
"Overdrive" function The 3-blade Gori folding propeller's "overdrive" function adds a new dimension to sailing under power. The helmsman can choose the propeller pitch and profile in the water while sailing forward, by regulating the...
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Variable pitch boat propeller (4 blades, adjustable) CPP ZF Marine
ZF-FPS specializes in custom designed, high quality propellers designed...
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Outboard and sterndrive propeller for boats (4 blades, stainless steel) Suzuki Marine
Propeller Hardware...
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Variable pitch boat propeller (2 blades, adjustable) CLASSIC 2 Max-Prop
The original two blade Max-Prop was designed in the early 70's for the high tech racing boats. Since proving itself in the racing arena, the two blade classic Max-Prop has...
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Variable pitch boat propeller (4 blades, adjustable) HPV - CPP France Hélices
Easy fittings of the electric commands, combining best security and best flexibility (as the automatic pitch reduction in case of engine...
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RUBEX L3 All-around Performance - Interchangeable with Flo-Torq & Vortex System - SOLAS High Performance / Rubber Hub - Three blade stainless steel propeller - Large diameter and blade area for big boat loads - Great high speed performance without sacrificing...
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It's not just an average aluminum propeller - there is a reason the Black Diamond is the world's best-selling aftermarket propeller! No other...
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Folding boat propeller (3 blades, shaft-drive or saildrive) Eliche Radice S.p.A.
Eliche Radice s.p.a has developed a new type of propeller which offers minimum resistance to forward motion while sailing and is highly efficient when under power. Starting with the traditional propeller with folding blades, a three blade model was developed which is a more efficient configuration...
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Stainless steel boat propeller (4 blades) PLEASURE FOUR Signature Propellers
The Signature Classic FOUR is one of Signature Propeller’s longest running propellers. First...
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Automatic feathering boat propeller (3 blades, saildrive) Darglow Engineering Ltd.
Darglow has over 30 years experience in feathering propeller design and in 2006 took the brave decision to design and manufacture a fully feathering propeller in the UK when many companies were moving production to China...
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Boat propeller (4 blades) O PROPELERIMA SCAM-Marine d.o.o.
Description Propeller or “screw” is the most common type of propulsion on ships. The propeller's construction is relatively simple, its durability exceeds the ship's durability, maintenance costs are very small, the price is relatively low, and efficiency relatively high. For all these reasons the largest number of vessels uses propeller for propulsion. Propeller...
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Boat propeller (4 blades) TYPE F West Mekan
Fixed pitch propellers are used when the optimal propeller design is known or can be calculated. It is also assumed that the user does not require the same level...
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Bronze boat propeller CJR Propulsion
Designed and tested using our bespoke software to provide the perfect propeller for any boat design, they are normally cast in Aluminium Bronze. From our highly accurate...
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Boat propeller (2 blades) Stump-Jumper
The Stump-Jumper propeller is a top of the line performer for the backwater enthusiast. Bill's Engineering spent years designing, testing and perfecting the newest of mud motor propellers with a process which...
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Variable pitch boat propeller (3 blades, controllable) AUTOPROP Bruntons Propellers
Autoprop is unique! This remarkable propeller can be found on thousands of sailing yachts the world over! Fitted to all the BT Challenge yachts, and tested in the most arduous conditions, Autoprops benefits for cruising yachts are unmatched by any other product. Considerably reduced drag can be expected from most feathering propellers but unlike ' the others' Autoprops exclusive...
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Automatic feathering boat propeller (3 blades) S1 AUTOSTREAM Seahawk
The Autostream self-feathering propeller has evolved through 8 models since 1976. Many experienced sailors have told us they consider the Autostream propeller to be the...
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Boat propeller (3 blades) Nissan Marine
Propellers have two basic dimensions; diameter & pitch. Diameter is the distance measured across the propeller hub line from the outer edge of the circle that is made by the propeller's blades during rotation. Pitch is the distance that a boat will travel if rotated one revolution without any slippage. When describing a propeller...
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In-board speed boat propeller VEEMSTAR-C VEEM Propellers
The VEEMStar-C® is the latest in high speed propeller design for high speed vessels which has evolved from the highly successful VEEMStar design. The VEEMStar-C has been designed in conjunction with several of the worlds largest pleasure boat manufacturers, where the design...
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Fishing boat propeller (bronze, 5 blades) Van Voorden Gieterij
Fuel is an important cost issue for the fishing industry. The price of fuel is very high and because of the fast development of the world economy, this will not decrease in the near future. Van...
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In-board watersport boat propeller COMPUTHRUST Austral Propeller
Put simply... this is the single most successful product our company has ever developed. We originally set out to design a propeller specifically for...
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In-board speed boat propeller Teignbridge
Teignbridge's design engineers can assist you in the selection of a standard propeller. By using a combination of standard selection charts, computer software and the wealth of experience the...
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Outboard and sterndrive propeller for boats (3 blades) TURBO 1 Turbo Propellers
The Turbo 1 series of propellers is the flagship propeller of the entire line and its versatility is unmatched. Whether you have a tri-log pontoon boat, a stern drive runabout, a bass boat or a triple engine rigged center console offshore boat, the Turbo 1 is...
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Outboard and sterndrive propeller for boats (3 blades) Tohatsu America
Propellers have two basic dimensions; diameter & pitch. Diameter is the distance measured across the propeller hub line from the...
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Michigan Wheel passes the savings along to you, in the form of a high quality, better performing propeller that typically costs less than the motor manufacturer prop you’re replacing....
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Boat folding propeller 2 blades, saildrive SLIPSTREAM Martec
Seahawk, Martec Engineering and Austral Propellers have joined forces to bring you the %u2018Slipstream%u2019 range of Folding Sailboat Propellers. Slpstream Folding propellers are a geared design. They were first released...
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Automatic feathering boat propeller (3 blades, saildrive) E3 FlexDrive EWOL S.r.l.
E3 (E-cubed) is a propeller that features innovative technical solutions in its shell, which are combined with the use of materials and treatments so far only applied in advanced technology fields. These innovations guarantee an absolutely superior resistance to mechanical shocks and galvanic corrosion, by no means comparable to the performances...
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Outboard and sterndrive propeller for boats (3 blades, aluminium) 8-20HP Turning Point Propellers
Turning Point Propeller Engineers have captured the best high performance stainless steel blade designs in our Hustler® aluminum product line. By using the latest squeeze cast manufacturing technologies, we produce propellers with minimal blade flex, thin tip profiles, aggressive rake...
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Automatic feathering boat propeller (3 blades) VARIPROFILE SPW
The new VARIPROFILE is the perfect feathering propeller for sailing boats and yachts up to 75 hp. Thanks to innovative design and production methods we can offer VARIPROFILE as an excpetional value, yet conforming to the highest quality standards of all our propellers. The...
