Powerboats

Also known as speedboats or motorboats, powerboats are built for speed and recreation. Ask questions about powerboating here.

7,421 Questions
Powerboats
Boats and Watercraft

According to the Navigation Rules which must be aboard a 22-foot powerboat?

a whistle or a horn

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Powerboats
Airplanes and Aircraft

Does size of propeller effect thrust?

There is more to propellor geometry than just "size" (diameter).

Props are also called out in pitch, which describes the forward distan a blade will travel in one rotation (ignoring losses) and is a function of both the foil (shape) of the blade and its angle relative to the line of thrust.

If I am using a 14X14 prop, it may have less thrust that a 12X16, despite being 2 inches "bigger" because its blades are flatter and don't move as much air (or water)

You can install the same outboard on two different boats and need a different pitch prop because of the differences in the two boats' displacements or hull shapes. The diameters are usually fixed on outboards so the pitch is adjusted...like differential ratios in cars.

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Powerboats
Boats and Watercraft
Watercraft Engine Maintenance

What is the weight of a mercury 9.8 hp outboard?

Should be right around 65 pounds

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Sailing
Powerboats

What is power driven vessel?

A boat driven by power, such as an inboard or outboard motor.

This answer is good! The only reason I typed the internationally recognized term was for testing purposes. The first person who answered was correct.

COLREGS 1972

Navigation Rules

-International-

General

Rule 3

Definitions

(b) The term "power driven vessel" means any vessel propelled by machinery.

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Powerboats
Houseboats

How do you get rust out of a inboard boat engine?

If you have rusty colored water in cooling passages this is normal as the inside of the engine blocks are not treated. This will usually flush out when running unless block has set a extend period(several years). If used in salt or brackish water you need to start and flush motor on a hose with muff and use a neutralizer like salt away..

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Powerboats
Watercraft Engine Maintenance

What is correct oil mixture for 40 hp evinrude?

The correct mixture is 50:1...or 1 pint to 6 gallons...if possible use the OMC Johnson/Evinrude oil, Do not add more oil than that, you will loose power.

Also I recommend adding SeaFoam to each tank. It decarbonizes the engine as well as preserves the fuel. 1/3 can to 6 gal with 1 pint of oil.

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Home Electricity
Powerboats
Boats and Watercraft

Is a 135 hp motor strong enough to ski with?

Yes, but it does depend on the skill of the skier and to some extent the design of the water skis.

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Powerboats
Boats and Watercraft
Watercraft Engine Maintenance

1977 Evinrude gas to oil ratio for 15 HP?

The 1977 model, Evinrude 15 hp outboard engine, requires a 50:1 ratio. This is one pint of 2 cycle oil, to six gallons of fuel, or 2.5 - 3 oz. of oil per gallon of gasoline.

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Powerboats

What if your lower unit oil is milky?

Milky oil is a sure sign of water contamination usually due to defective seal(s). Find the leak and you absolutely need to change the oil.the drive must be pressure tested and then vacuum tested there are double seal s back to back and out put and input shaft also the oil fill screws must have a good o-ring to keep out water

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Scooters and Mini-Bikes
Powerboats
Yamaha Motorcycles
Combustion Engines

Do 50cc 2 stroke engines have engine oil?

Yes and no. 2 strokes do not have oil like a car, meaning in the crankcase. the oil is mixed with the fuel and introduced into the engine through either the carburetor or an oil injection set up. the oil/fuel mix is burned in the engine. that's why 2 strokes smoke so much.

and on most small two strokes the gearbox is a separate compartment containing engine oil like a regular engine.

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Powerboats

What are hydrofoils and hydroplanes?

A Hydrofoil is something that whose hull is fitted underneath with shaped vanes (foils) that lift the hull clear of the water to increase the boat's speed.

A Hydroplane is something that is attachment to a plane to make it glide across water.

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Powerboats

How fast will a 65 hp mercury outboard go?

depends on the boat is it a v hull or flat also the weight you are carrying you can probably gp at least 40

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Powerboats
Boats and Watercraft
Definitions

What is a motorboat's wake?

rooster tail

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Cars & Vehicles
Power Steering
Powerboats

What is the brand of car with a ship's steering wheel as the emblem?

hmm.... Plymouth used a sail boat, Mercedes used an airplane prop, so did BMW.. Toyota celica used a dragon that looked a bit like a swan... can you be a little more specific and narrow it down by century or decade??

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Powerboats
Volume

How many quarts are in 6.6 Liters?

6.6 liters = 6.97 US quarts (6.97414218).


1 liter ~ 1.05669 US quarts
1 US quart ~ 0.946353 liters

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Powerboats
Boats and Watercraft
Watercraft Engine Maintenance

Where are the spark plugs in a 2.5 hp mercury outboard motor?

For a 2000 model: The Spark Plug (1) is located in the rear of the engine (opposite the pull start), beneath the gas tank. There is an access hatch. It can also be seen apon removal of the upper engine housing cover.

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Powerboats
Boats and Watercraft
Watercraft Engine Maintenance

What is the weight of a 1994 60 hp mercury outboard motor?

237-254 pounds

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Powerboats

What are some analogies for flagella?

An analogy for flagella might be a fish. the fishes tail propels it forward.

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Powerboats
Boats and Watercraft
Watercraft Engine Maintenance

How old is your Johnson motor model fd-20c?

1966 20 hp.

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Powerboats
Boats and Watercraft
Watercraft Engine Maintenance

What is the History of Chrysler Outboard motors?

Chrysler Corp purchased West Bend's outboard manufacturing in January,1965. Chrysler sold the marine division not because they desired to, but because it was demanded as part of the government's loan guarantees. Chrysler stern drives were sold to Bayliner Boats in 1983 and the outboard division was sold to the Force Outboards division of U.S. Marine - an affiliate of Bayliner - in 1984.

The Chrysler Marine and Chrysler Defense divisions of the Chrysler Corporation were the two most profitable parts of that company, and the government made them divest both businesses. If it was me, I would have made Chrysler sell the division making the cruddy cars to Volkswagen or someone else that made cars people liked, and just turned Chrysler into a defense contractor.

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Powerboats
Entertainment & Arts
Watercraft Engine Maintenance

How old is model sheila Johnson?

Old... Why?

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Powerboats
Boats and Watercraft
Fishing Boats

Do you need to register a boat if it has a trolling motor in vermont?

typically if the vessel is over 12 feet long, you need to register. even though there is no gas motor.

123
Powerboats
Planet Mercury
Hermes (Mercury)
Freddie Mercury

How does mercury outboard 60 hp e60elcia work?

An E60ELCIA is not a Mercury. It is an Evinrude. A 1981 Evinrude.

And it works just like any other 2-stroke outboard engine.

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Powerboats
Watercraft Engine Maintenance

Does 1996 8 hp mercury outboard have points?

No, it is completely electronic, consisting of a stator, trigger, switchbox and coils.

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Plumbing
Powerboats
Boats and Watercraft

Is there any benefit to replacing the half inch water supply on your boat with three-quarters inch?

it will increase your volume. The only benifit is if you ever run more than one fixture at a time.

answerit may increase volume but it will lower pressure and make pump work harder to deliver it
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