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For boat owners around the globe, Deep Blue Yacht Supply is your trusted source for all size boat propellers. We are committed to providing the best props, at the lowest prices, with superior customer service.

Deep Blue Yacht Supply has the largest inventory of Inboard Boat Props, Outboard Props, Stern Drive Props, Ski Boat Props, and Volvo Duo Props; you will be sure to find the best prop for your boat.

Deep Blue only sells new boat props, which price-wise are very comparable to used boat props; don’t settle for used boat propellers, when you can buy new boat props for around the same amount.

Need help finding the perfect boat propeller for your outboard, sterndrive, or ski boat? Use our state of the art Propeller Guide to find the perfect propeller for your boat. Need assistance in selecting the best prop for your inboard engine? Submit an Inboard Propeller Sizing to our propulsion & running gear experts, and receive back the correct inboard boat propeller based on your boat’s vitals.

Trust Deep Blue Yacht Supply to help equip your boat with the best possible boat props. Deep Blue Yacht Supply is able to provide the ultimate sales and service experience, when it comes to selecting the best propellers for your application.

One thing that each and every boat needs is the optimal boat propeller. Boat props serve to move your boat through the water, however not all boat propellers are the same. In fact there are many different variables that can effect your boats performance when choosing a propeller. The primary factors to consider are the number of blades the propeller has, the diameter of the propeller and the pitch of the propeller. Other factors to keep in mind are the material the propeller is made from, whether the blades are cupped, how much rake is there to the blades and how well are the blades ventilated. One other factor that plays a role in choosing boat propellers is the type of engine your boat has. Below is a bit of information to help you choose a boat propeller based on your engine type or boat usage.

Outboard Propellers - Outboard propellers are those used on outboard engines such as Yamaha, Evinrude, Johnson, Force, Mercury, Nissan, Tohatsu, and Suzuki. Typically these boat propellers are the 3 or 4 bladed variety as these provide the best performance for the size and class of boat that uses an outboard motor. Outboard propellers can be made from a variety of materials, but aluminum and stainless steel are the most common. As with any boat propellers the proper outboard propeller is determined by a combination of diameter and pitch that will allow the boats engine to operate at the manufacturers recommended RPM's when at wide open throttle (WOT). Deep Blue Yacht Supply carries the complete line of Michigan Wheel and SOLAS outboard propellers.

Inboard Propellers - Inboard propellers are those installed on an inboard motor. Inboard propellers are typically constructed of NiBrAl or Bronze materials, with NiBrAl being the optimal material. When choosing a diameter for your inboard propeller you must be sure that it leaves adequate clearance with the bottom of the hull. A general rule of thumb for this is that the clearance should be equal to 20% of the diameter of the propeller. So a propeller with a diameter of 20 inches should have at least 4 inches clearance. If this become a problem a propeller that is 1-2 inches smaller can be used with a corresponding increase in pitch to maintain engine efficiency. Deep Blue Yacht Supply stocks the complete line of Michigan Wheel inboard propellers.

Sterndrive propellers - Stern drive engines are widely regarded as one of the great improvements in the recent history of boating. Stern drive props are able to be trimmed with controls at your fingertips. This can result in better fuel efficiency, safer shallow water boating and better handling in rough waters. Stern drives have the rudder built in providing much better control, especially when docking. The major downside of stern drives is the high cost of maintenance due to the fact the often the engine must be removed to work on parts that are in a space that is too small to access. Deep Blue Yacht Supply carries the complete line of Michigan Wheel and SOLAS boat propellers, and is able to provide props for OMC, Volvo Penta, Yamaha, and MerCruiser sterndrive engines.

Ski Propellers - When choosing ski boat propellers some of your decisions have been made for you based on the type of boating you will be doing. For example, you will often want a lower pitch to increase your hole shot speed and get the skiers up out of the water as quickly as possible. Hole shot speed and quick planing are two extremely important performance variables when selecting the best propeller for your boat. Afterrmarket ski boat propellers routinely outperform stock propellers from hole shot to top end, which is why so many ski boat owners select ACME or Ambush ski propellers. Deep Blue Yacht Supply is the marine industry leader when it comes to supplying ACME and Ambush ski props.

Volvo Duo propellers - The Volvo Duo propellers revolutionized propellers when they were introduced in 1982. These revolutionary boat propellers provide boaters with increased bite in the water, faster acceleration combined with better fuel efficiency, less vibration and noise, quicker planing and improved maneuverability. Designed as two counter rotating blades with the end result being the engines power is directed at driving the boat forward rather than sideways due to lateral forces that can act on conventional single propeller stern drives. The Volvo Duo propellers are available in a wide variety of sizes and materials depending on your engine and boating needs. Deep Blue Yacht Supply is the price and service leader when it comes to Volvo Duo Props, and stocks the complete line.

Boat Propeller Design: The Issue of “Cupping”

Many different elements go into the design of boat propellers.  In addition to the diameter of a propeller and the amount of pitch it produces, boating enthusiasts also need to consider issues such as rake, which refers to the angle measured in degrees between the hub and each of the blades on the propeller.   Yet another consideration is the issue of cupping.

What is a “Cupped” Propeller?

Boats props that are said to be “cupped” have a final trailing end that appears to curl away a perceptible amount from the watercraft. This small amount of curl produces a blade tip that appears to have a small indentation or “cup,” hence the term.

Cupping is one of the recent innovations to be added to the design of boat propellers.  When the technique of cupping a blade was first applied, the purpose of it was to augment either pitch or rake but without the need to bend the entire blade, since that can produce unwanted effects.

Benefits of Cupped Blades

As soon as cupping was applied to propeller blades, however, it became apparent that one of its primary effects was to enhance boat performance.  Since a cupped blade tends to produce an increased amount of pitch, it meant that rpms could be decreased without a loss in performance.  This in turn increased motor efficiency.

The increase in efficiency generally depends upon how much cupping is incorporated into a blade design, though the precise location of the cupping is also an important factor.

Excellent Ski Propeller Choices

Several different kinds of ski propellers exist to provide a water skiing experience that will be enjoyable for all.  Water skiing requires a powerful motor that can rapidly reach full power, and this requires the right kind of propeller.  Without that, when the water skier yells, “hit it!” he or she will merely be dragged along the surface of the water instead of being able to stand up on top of the skis to slide and skid along the surface.

Ambush Ski Props

The Michigan Wheel line of Ambush ski propellers uses a machining process known as CNC.  This process was developed by Michigan Wheel during the 1980s to guarantee a completely accurate propeller in all specifications and dimensions that will function as intended.  CNC originally applied only to the fabrication of custom propellers intended for large yachts and other luxury vessels. Over time, it has become a standard for many propeller series including the Ambush line.  Michigan Wheel offers a limited lifetime warranty on all Ambush ski props.

Acme Ski Propellers

Acme ski props are manufactured of durable nibral and are 100% American-made.  Available in both three- and four-bladed varieties, Acme also uses a “computer numerically controlled” manufacturing process to ensure optimal fabrication so that stated specifications are completely accurate and match the actual prop.

Dyna Jet Cupped from Michigan Wheel

Another Michigan Wheel ski prop choice is the Dyna Jet Cupped, which is specifically engineered to meet the needs of high-powered boats.  Dyna Jet props are made of nibral, an alloy of nickel, bronze, and aluminum.

The Importance of Pitch

Those new to boating might not have heard of propeller pitch, but is it one of the most important specifications that propellers possess.  Propeller pitch is a basic term used to describe a propeller.  The pitch measurement communicates what kind of performance a boating enthusiast can expect from a given unit. In effect, prop pitch describes how much motion the propeller will move forward during one complete revolution.  For example, a propeller described as having 17″ of pitch would move in a forward direction a full 17″ as a result of the blades making one complete turn.

An Idealized Number

Pitch as it is given in propeller descriptions in an idealized number because it always indicates “perfect pitch,” which refers to the distance a propeller would move forward if it were moving through a soft and stable medium such as balsa wood.  The real world conditions a motor must contend with are far from ideal, however.  The rocking motion of a boat upon the water along with the underwater eddies will usually cause a reduction in true pitch.

Implications of Pitch Figures

Propellers with a large pitch number will be able to supply top speeds that are greater than those are that can be achieved from propellers with low pitch.  As is usually true, however, there are trade-offs to consider.  Better top speed usually means a slower rate of acceleration.  In the same manner, a prop with low pitch will mean that an engine can reach its maximum power at a lower speed.

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