A strong sailboat outboard should match the boat’s transom height and propulsion needs; the Sootvp 7HP Long Shaft is the clearest match here because its stated stern-plate range is 17.72–21.65 inches and its listing names sailboats. This roundup compares 10 long-shaft options, including gas engines from 7HP to 18HP and a 3HP-equivalent electric motor. The listings vary in shaft-fit detail, engine type, power, fuel capacity, and included equipment, so the highest horsepower is not automatically the best sailboat choice.
Check your boat’s required shaft length and the manufacturer’s compatibility guidance before ordering. Product details provided here do not establish fuel economy, noise under load, or real-world range, so treat those as questions to resolve for your own boat and use.
The Sootvp 7HP Long Shaft leads because it is the only listing that explicitly names sailboats and gives a stern-plate height range: 17.72–21.65 inches. Its 4-stroke engine, three-blade propeller, and forward, neutral, and reverse gears make it a more directly documented match than the higher-powered fishing-boat-focused options. Confirm the actual shaft length and your sailboat’s transom requirements with the seller before buying; the provided specifications do not state the shaft length in inches.
Our Top Picks
Best OverallThe listing explicitly includes sailboats and specifies a 17.72–21.65-inch stern-plate height range, plus a 4-stroke engine and three gears.
View on Amazon
Best Electric OptionIts long-shaft configuration and 110 pounds of thrust suit small-boat propulsion, while the 36V electric system avoids gasoline.
View on Amazon
Best Four-Stroke PowerThis long-shaft 4-stroke offers 9HP and a 1.5-liter fuel capacity, a power-focused alternative to the sailboat-specific 7HP listing.
View on Amazon- Largest Fuel Tank MIOUYTRT 18HP Long Shaft
Compare Long-Shaft Outboard Options
| # | Product | Weight | Fuel Capacity | Material | Operation Mode | Buy |
|---|---|---|---|---|---|---|
| 1 | 1. Sootvp 7HP Long ShaftBest Overall | — | 1.4 liters | Aluminum | Manual | View on Amazon |
| 2 | 2. Newport NT300 ElectricBest Electric Option | 23.8 lb | — | — | Electric | View on Amazon |
| 3 | 3. SRTYGHW 9HP Long ShaftBest Four-Stroke Power | 25.6 kg | 1.5 liters | Aluminum Alloy, Nylon, Rubber | Manual | View on Amazon |
| 4 | 4. MIOUYTRT 18HP Long ShaftLargest Fuel Tank | 106 lb | 6.34 gallons | Aluminum | — | View on Amazon |
| 5 | 5. LSYSGSB 18HP Long ShaftCDI-equipped long-shaft propulsion | — | 6.34 gallons | Aluminum | Manual | View on Amazon |
| 6 | 6. BJTDLLX 18HP Long ShaftLong-range freshwater fishing | 28 kg | 6.34 gallons | Aluminum, Plastic | Manual | View on Amazon |
| 7 | 7. Cbhfmljd 18HP Long ShaftHigh-capacity fishing loads | 28 kg | 24 liters | Aluminum, Plastic | Manual | View on Amazon |
| 8 | 8. awolsrgiop 18HP Long ShaftManual tiller boat handling | 28 kg | 6.34 gallons | Aluminum, Plastic | Manual | View on Amazon |
| 9 | 9. NEBEUUO 18HP Long ShaftHeavy-load fishing and aquaculture | — | 24 liters | — | Manual | View on Amazon |
| 10 | 10. YUASDUU 18HP Long ShaftTiller-controlled gas propulsion | — | 24 liters | Aluminum | — | View on Amazon |
Detailed Reviews: Best Long Shaft Outboard Motor For Sailboat

#1 · Best Overall
1. Sootvp 7HP Long Shaft
- Fuel Capacity: 1.4 liters
- Material: Aluminum
- Operation Mode: Manual
Best for: Sailboats with specified transoms.
Why it ranks #1: The listing explicitly includes sailboats and specifies a 17.72–21.65-inch stern-plate height range, plus a 4-stroke engine and three gears.
A stated stern-plate height range of 17.72–21.65 inches gives the Sootvp 7HP long-shaft outboard a concrete transom-fit reference for sailboat shoppers. Its four-stroke engine runs at 4,500–6,000 rpm, and the listing gives a speed range of 6.21–9.32 miles per hour.
The three-blade propeller and streamlined design are described as reducing water resistance and providing greater power during operation. Forward, neutral, and reverse gears add directional options, controlled through the throttle lever and handle. Its air-cooling and TCI system are specified alongside a 1.4-liter fuel capacity. The stated stern-plate range helps buyers compare transom height before installation; the listing also names sailboats, fishing boats, and multiple hull materials as applications.
- Stern-plate height range of 17.72–21.65 inches
- Four-stroke 7HP engine with TCI system
- Forward, neutral, and reverse gears
- Three-blade propeller
- Fuel capacity is 1.4 liters.
Skip it if you need the 6.34-gallon tank specified on the LSYSGSB 18HP model for longer fuel-supported outings.
A sensible option for sailboat owners whose stern plate falls within the listed 17.72–21.65-inch range and who want a 7HP four-stroke. Its 1.4-liter fuel capacity is a key trip-planning boundary.
Full product details
| Brand | Sootvp |
|---|---|
| Color | black |
| Fuel Capacity | 1.4 liters |
| Included Components | 1* English Manual, 1* Funnel, 1* Outboard Motor, All Accessories for Installation |
| Dimensions | 20.86"D x 13.78"W x 46"H |
| Manufacturer | Sootvp |
| Part Number | Outboard Boat Motors-7V5 |
| Manufacturer Warranty Description | No |
| Material | Aluminum |
| Model Number | Outboard Boat Motors-7V5 |
| Operation Mode | Manual |
| Recommended Uses | For Fishing Boats, For Inflatable Boats |
Listed on Amazon as: 4 Stroke 7HP Outboard Motor,Long Shaft Outboard Motor Air Cooling TCI System,Heavy Duty Outboard Motor for Fishing Boats, Sailboats, Etc
View on Amazon
#2 · Best Electric Option
2. Newport NT300 Electric
- Weight: 23.8 lb
- Operation Mode: Electric
Best for: Quiet electric sailboat propulsion.
Why it ranks #2: Its long-shaft configuration and 110 pounds of thrust suit small-boat propulsion, while the 36V electric system avoids gasoline.
A 36V brushless direct-drive system gives the Newport NT300 electric propulsion without gas, fumes, or engine noise, making it the roundup’s clearest choice for quiet operation. This long-shaft model supplies 1,300W and up to 110 pounds of thrust, with a digital throttle and a 66-mile listed range.
The motor’s 3HP-equivalent output and up-to-110-pound thrust are specified for main propulsion, not merely trolling, and the long-shaft configuration serves boats requiring that setup. Electric operation avoids fuel handling and engine noise, while the digital throttle provides the stated control interface. A quick-disconnect battery connection is included, as are an emergency magnetic stop key, propeller, and installation tools. The listed 36V system and 66-mile range are central to planning battery-supported outings.
- 36V, 1,300W brushless direct drive
- Up to 110 pounds of thrust
- Digital throttle and emergency magnetic stop key
- Listed 66-mile range
- Requires a 36V electric power setup rather than gasoline.
Skip it if you need gasoline propulsion and a fuel tank for your trip; the BJTDLLX 18HP model lists a 6.34-gallon tank.
A strong fit for boaters prioritizing quiet, fume-free main propulsion and a long-shaft electric setup on compatible small boats. Plan around its 36V power requirement and the listed range when preparing longer trips.
Full product details
| Brand | Newport |
|---|---|
| Color | Light Gray |
| Included Components | NT300 Long Shaft Motor, Propeller, Quick Disconnect Battery Connection, Emergency Magnetic Stop Key, Difital Throttle Control, Installation Tools |
| Item Weight | 23.8 pounds |
| Manufacturer | Newport |
| Part Number | 23M1000702 |
| Manufacturer Warranty Description | 2 Year Limited Warranty |
| Model Number | 23M1000702 |
| Operation Mode | Electric |
| Recommended Uses | Fishing, recreational boating, and main propulsion for small boats, inflatables, tenders, and jon boats |
| Voltage | 36 volts |
Listed on Amazon as: Newport NT300 Long Shaft Electric Outboard Motor – 3HP 1300W Brushless Direct Drive for Salt and Freshwater, 66-Mile Range, Ultra-Quiet, Hassle-Free Maintenance, Portable, Digital Throttle
View on Amazon
#3 · Best Four-Stroke Power
3. SRTYGHW 9HP Long Shaft
- Weight: 25.6 kg
- Fuel Capacity: 1.5 liters
- Material: Aluminum Alloy, Nylon, Rubber
- Operation Mode: Manual
Best for: Four-stroke smaller-boat cruising.
Why it ranks #3: This long-shaft 4-stroke offers 9HP and a 1.5-liter fuel capacity, a power-focused alternative to the sailboat-specific 7HP listing.
A four-stroke 9HP OHV engine sets the SRTYGHW apart from the roundup’s 18HP two-stroke motors, offering a lower-power option for fishing or inflatable boats. It runs at 3,800 rpm and lists a maximum speed of 15 km/h, with a two-bladed nylon propeller and air cooling.
The 225cc OHV engine uses TCI ignition, while flame-failure protection is also listed; together, these are the named ignition and safety features for this manual-start motor. Its air-cooling vents support the specified cooling approach without a water-cooling system. The 1.5-liter fuel tank is modest in stated capacity, so trip planning should account for that figure. Aluminum-alloy construction, a nylon propeller, and included installation accessories define the listed hardware and package.
- Four-stroke, 9HP, 225cc OHV engine
- TCI ignition and flame-failure protection
- Air cooling
- Two-bladed nylon propeller
- The listed fuel tank holds 1.5 liters.
Skip it if you need the listed 6.34-gallon fuel capacity for longer outings; several 18HP motors here specify that larger tank.
Best suited to buyers seeking a 9HP four-stroke for fishing or inflatable boats, rather than maximum listed horsepower or fuel capacity. Its 1.5-liter tank and manual operation are important considerations for trip planning.
Full product details
| Brand | SRTYGHW |
|---|---|
| Color | Black |
| Fuel Capacity | 1.5 liters |
| Included Components | 1* Outboard Engine 2* English Manuals All Accessories for Installation |
| Item Weight | 25.6 kg |
| Manufacturer | XiongGuoShengWen |
| Part Number | OT-ML |
| Manufacturer Warranty Description | 3 months |
| Material | Aluminum Alloy, Nylon, Rubber |
| Model Number | DWQDSA |
| Operation Mode | Manual |
| Recommended Uses | For Fishing Boats, For Inflatable Boats |

#4 · Largest Fuel Tank
4. MIOUYTRT 18HP Long Shaft
- Weight: 106 lb
- Fuel Capacity: 6.34 gallons
- Material: Aluminum
Best for: Longer-trip 18HP gasoline boats.
Why it ranks #4: The 18HP 2-stroke has a 6.34-gallon tank and includes a fuel tank and toolkit, though its listing focuses on small craft rather than sailboats.
A stated vessel-length and load window makes the MIOUYTRT 18HP long-shaft outboard unusually specific about its intended boat: over 3 meters long and under 1,000 kilograms loaded. Its 6.34-gallon tank, 246cc two-stroke engine, water cooling, and CDI ignition complete the central setup.
The 18HP engine’s 4,500–5,500 rpm range and stated optimized combustion are paired with a 6.34-gallon tank, supporting the listing’s emphasis on extended trips. Water cooling and CDI ignition are named system features, while the supplied package includes a fuel tank, flameout rope, start rope, spark plug, and water-pump impeller. The product specifies vessels over 3 meters long, over 60 kg net weight, and under 1,000 kg load, providing concrete selection boundaries.
- 18HP, 246cc two-stroke engine
- 6.34-gallon fuel tank
- Water cooling and CDI ignition
- Stated vessel limits for length, net weight, and load
- The stated application requires a vessel over 3 meters long and over 60 kg net weight.
Skip it if you have a boat 3 meters or shorter, or weighing 60 kg or less; its stated vessel limits exclude that fit.
A candidate for operators whose boat meets the stated length and weight limits and whose loaded vessel stays under 1,000 kg. The 18HP engine and large listed tank suit buyers planning fuel-supported outings.
Full product details
| Brand | MIOUYTRT |
|---|---|
| Color | Black |
| Fuel Capacity | 6.34 gallons |
| Included Components | 1x Outboard Motor 1x Flameout Rope 1x Oil Pipe 1x Sealing Ring 1x Paper Pad 1x Spark Plug 1x Start Rope 1x Water Pump Impeller 1x Cotter Pin 1x Fuel Tank 1x English Manual Other Tools |
| Dimensions | 22.44"D x 10.63"W x 47.24"H |
| Item Weight | 106 pounds |
| Manufacturer | Aongslank |
| Part Number | GDK-69KU |
| Manufacturer Warranty Description | 2 YEAR |
| Material | Aluminum |
| Model Number | HGD-JF6U |

#5
5. LSYSGSB 18HP Long Shaft
- Fuel Capacity: 6.34 gallons
- Material: Aluminum
- Operation Mode: Manual
Best for: CDI-equipped long-shaft propulsion.
Why it ranks #5: Its 18HP 2-stroke, 6.34-gallon tank, CDI ignition, and included fuel tank provide substantial listed equipment, but sailboat fit is not specified.
A CDI ignition system and suspension tilt-adjusting pin distinguish this LSYSGSB 18HP long-shaft outboard for buyers prioritizing starting and trim-related features. Its 246cc two-stroke engine is listed at 4,500–5,000 rpm, with a three-blade propeller and 6.34-gallon fuel tank.
The CDI system is described as supporting quick, safe starting, while the tilt-adjusting pin and anti-vortex plate are listed to minimize tilt and vortex for smoother operation. A water-cooling system accompanies the 18HP, 246cc two-stroke engine. The included package lists a fuel tank, toolkit, English manual, and use accessories. The product description names inflatable, iron, plastic, fiberglass, and wooden boats, while specifying small-ship dimensions; check those stated limits against the vessel.
- CDI ignition system
- Suspension tilt-adjusting pin and anti-vortex plate
- Water-cooling system
- 6.34-gallon fuel tank and toolkit included
- The listed engine speed tops out at 5,000 rpm.
Skip it if you want the 5,500-rpm upper limit listed for the MIOUYTRT 18HP model rather than this model’s 5,000-rpm limit.
A fit for buyers seeking an 18HP long-shaft motor with CDI ignition, water cooling, and listed tilt and vortex features. Compare the specified small-ship dimensions with your vessel before choosing it.
Full product details
| Brand | LSYSGSB |
|---|---|
| Color | 18HP Long Shaft Outboard Motor |
| Fuel Capacity | 6.34 gallons |
| Included Components | 1* 2-Stroke Outboard Motor 1* Toolkit 1* Fuel Tank 1* English Manual All Accessories for Use |
| Dimensions | 46.06"D x 33.2"W x 46.06"H |
| Manufacturer | LSYSGSB |
| Part Number | 18HP Outboard Motor |
| Manufacturer Warranty Description | 180 Days |
| Material | Aluminum |
| Model Number | 18HP Long Shaft Outboard Motor |
| Operation Mode | Manual |
Listed on Amazon as: 18HP Outboard Motor, Long Shaft 2 Stroke Outboard Motor Boat Engine, 246CC Heavy Duty Fishing Boat Engine Marine Engine with CDI Ignition System Water, 5000-6000 r/min
View on Amazon
#6
6. BJTDLLX 18HP Long Shaft
- Weight: 28 kg
- Fuel Capacity: 6.34 gallons
- Material: Aluminum, Plastic
- Operation Mode: Manual
Best for: Long-range freshwater fishing.
Why it ranks #6: The 18HP water-cooled 2-stroke includes a 6.34-gallon tank and weighs 28 kg; the listing recommends it for fishing boats, not sailboats.
A 6.34-gallon fuel tank is the clearest practical distinction of this BJTDLLX 18HP long-shaft outboard, giving fishing-boat operators more onboard fuel capacity for short or long trips. Its 246cc, two-cylinder engine runs at 4,500–5,500 rpm, while water cooling addresses heat during extended operation.
The 18HP two-stroke engine and 2.08 gear ratio provide a specified powertrain for operators prioritizing propulsion, while the 6.34-gallon tank supports longer outings between refueling stops. Water cooling and multiple cooling holes help dissipate heat during sustained use. Manual operation means the motor is started by hand, and its aluminum-and-plastic construction weighs 28 kg. The listed recommended use is fishing boats in fresh water, making that the clearest stated application.
- 18HP, 246cc two-cylinder engine
- 6.34-gallon fuel tank
- Water-cooling system and multiple cooling holes
- F-N-R gear selection
- Manual operation requires starting the motor by hand.
Skip it if you want electric propulsion without gas or engine noise; the Newport NT300 is the listed electric alternative.
A fit for freshwater fishing-boat operators seeking an 18HP long-shaft motor with substantial listed fuel capacity and water cooling. Account for its 28 kg weight and manual operation when planning installation and onboard handling.
Full product details
| Brand | BJTDLLX |
|---|---|
| Color | 2 Stroke 18HP Long Shaft |
| Fuel Capacity | 6.34 gallons |
| Included Components | 1 |
| Dimensions | 13.07"D x 34.37"W x 41.46"H |
| Item Weight | 28 kg |
| Manufacturer | BJTDLLX |
| Part Number | 2 Stroke 18HP Long Shaft |
| Manufacturer Warranty Description | no |
| Material | Aluminum, Plastic |
| Model Number | 2 Stroke 18HP Long Shaft |
| Operation Mode | Manual |
| Recommended Uses | For Fishing Boats, For Fresh Water |
Listed on Amazon as: 2 Stroke 18HP Outboard Motor, Long Shaft Outboard Motor Boat Engine, 246CC Heavy Duty Fishing Boat Marine Engine with CDI Ignition System Water Cooling System -Long Shaft
View on Amazon
#7
7. Cbhfmljd 18HP Long Shaft
- Weight: 28 kg
- Fuel Capacity: 24 liters
- Material: Aluminum, Plastic
- Operation Mode: Manual
Best for: High-capacity fishing loads.
Why it ranks #7: This 28 kg, 18HP water-cooled motor lists a 24-liter fuel capacity and a one-year warranty, but its stated use is fishing boats.
A stated maximum load capacity of 2,204 pounds distinguishes this Cbhfmljd 18HP long-shaft outboard for buyers weighing load capability heavily. Its 246cc, two-stroke engine is specified at 4,500–5,500 rpm, and the listing cautions that heavier loads reduce speed, a useful boundary when planning a boat’s payload.
The aluminum-alloy construction is described as corrosion- and rust-resistant, while its hardness and resistance to bending support long-term use in the stated fishing-boat application. A 24-liter fuel capacity provides onboard fuel for outings, and the two-stroke 18HP engine supplies the listed propulsion specification. The claimed 2,204-pound maximum load offers a planning reference, not a promise of unchanged speed: the product information explicitly says heavier loads make the motor slower. It uses manual operation.
- Stated maximum load capacity of 2,204 pounds
- 18HP, 246cc two-stroke engine
- 24-liter fuel capacity
- Aluminum-alloy construction described as corrosion- and rust-resistant
- The listing states that heavier loads reduce speed.
Skip it if you need to maintain speed under heavy payloads; its own listing says added load slows the motor.
Consider it if your fishing-boat selection prioritizes the stated load capacity and you can account for slower travel under heavier payloads. Its 24-liter fuel capacity and manual operation are relevant planning factors.
Full product details
| Brand | Cbhfmljd |
|---|---|
| Color | 2 Stroke 18HP Long Shaft |
| Fuel Capacity | 24 liters |
| Included Components | Comes with housing |
| Item Weight | 28 kg |
| Manufacturer | Cbhfmljd |
| Part Number | 1 |
| Manufacturer Warranty Description | 1 year |
| Material | Aluminum, Plastic |
| Model Number | 2 Stroke 18HP |
| Operation Mode | Manual |
| Recommended Uses | For Fishing Boats |
Listed on Amazon as: 2 Stroke 18HP 246CC Outboard Motor Boat Engine Gas-Powered Water Cooling System Long Shaft Outboard Motor Tiller Control Outboard Boat Motors Heavy Duty Fishing Boat Kayak Engine
View on Amazon
#8
8. awolsrgiop 18HP Long Shaft
- Weight: 28 kg
- Fuel Capacity: 6.34 gallons
- Material: Aluminum, Plastic
- Operation Mode: Manual
Best for: Manual tiller boat handling.
Why it ranks #8: The 18HP 2-stroke has a 6.34-gallon tank and a stated one-year warranty, but the listed use emphasizes fishing and freshwater boats.
A 20-inch non-slip handle gives this awolsrgiop 18HP long-shaft outboard a specific, grippable tiller-control point for manual operation. The 246cc two-stroke motor runs at 4,500–5,500 rpm, and its stated 2,204-pound maximum load capacity offers a payload reference, with speed decreasing as load increases.
The manual-start system uses a starter rope and speed switch on the handle, so the listed operation relies on direct, hands-on controls. Its 20-inch non-slip handle is intended to be easy to grip, while flexible steering and precise speed control support adjustment underway. The two-stroke 18HP engine and water cooling pair propulsion with heat management. A 6.34-gallon tank supplies onboard fuel capacity; the stated maximum load is 2,204 pounds, with heavier loads reducing speed.
- 20-inch non-slip handle
- Manual start with starter rope and handle speed switch
- Water-cooling system
- 6.34-gallon fuel tank
- Manual starting requires pulling the starter rope.
Skip it if you want electric propulsion and a digital throttle; the Newport NT300 lists both and runs without gas.
A match for operators who want manual tiller handling, a long non-slip grip, and an 18HP engine for fishing boats. Consider the rope-start routine and the stated speed penalty under heavier loads.
Full product details
| Brand | awolsrgiop |
|---|---|
| Color | 2 Stroke 18HP Long Shaft |
| Fuel Capacity | 6.34 gallons |
| Included Components | Comes with housing |
| Dimensions | 46.06"D x 13.07"W x 46.06"H |
| Item Weight | 28 kg |
| Manufacturer | awolsrgiop |
| Part Number | 255 |
| Manufacturer Warranty Description | 1 year |
| Material | Aluminum, Plastic |
| Model Number | 2 Stroke 18HP |
| Operation Mode | Manual |
| Recommended Uses | For Fishing Boats, For Fresh Water |
Listed on Amazon as: 2 Stroke 18HP Outboard Motor Gas-Powered Water Cooling Boat Engine Long Shaft Tiller Control 246CC Heavy Duty Fishing Boat Kayak Engine Outboard Motors Boat Engine Motor
View on Amazon
#9
9. NEBEUUO 18HP Long Shaft
- Fuel Capacity: 24 liters
- Operation Mode: Manual
Best for: Heavy-load fishing and aquaculture.
Why it ranks #9: Its 18HP water-cooled engine comes with a 24-liter tank and listed accessories, but the maker describes fishing and aquaculture applications.
A stated 2,204-pound maximum load capacity makes this NEBEUUO-branded Hangkai 18HP long-shaft outboard a payload-focused option for fishing and aquaculture. Its 246cc two-stroke engine runs at 4,500–5,500 rpm, and the 6.34-gallon tank supports the listing’s emphasis on endurance.
The aluminum-alloy construction and 18HP engine underpin the stated maximum load capacity, though the listing warns that heavier loads reduce speed. Its two-stroke motor is paired with water cooling and a 6.34-gallon fuel tank, connecting heat management and fuel capacity to longer operating plans. The supplied package lists a tank, oil pipe, start rope, tools, and water-pump impeller. The listing identifies fishing boats, kayaks, fisheries, and aquaculture, and gives dimensions for suitable small ships.
- 18HP, 246cc two-stroke engine
- Stated maximum load of 2,204 pounds
- 6.34-gallon fuel tank
- Water-pump impeller and fuel tank included
- The listing says speed decreases as load increases.
Skip it if you need speed to remain unchanged under heavy loads; this listing explicitly warns that added load slows the motor.
Consider it for fishing or aquaculture operators looking for an 18HP long-shaft motor with a 6.34-gallon tank and a stated high load capacity. Payload and boat dimensions should guide suitability.
Full product details
| Brand | NEBEUUO |
|---|---|
| Color | Black |
| Fuel Capacity | 24 liters |
| Included Components | 1x Cotter Pin 1x Fuel Tank 1x English Manual, 1x Oil Pipe 1x Sealing Ring 1x Paper Pad, 1x Outboard Motor 1x Flameout Rope, 1x Spark Plug 1x Start Rope 1x Water Pump Impeller, Other Tools |
| Dimensions | 33.2"D x 33.2"W x 46.06"H |
| Manufacturer | NEBEUUO |
| Part Number | YDFK7V9DWDML8-XZY1-01 |
| Manufacturer Warranty Description | 2 |
| Model Number | Outboard Motor |
| Operation Mode | Manual |
| Recommended Uses | Fishing boat, kayak, fishery, and aquaculture use |

#10
10. YUASDUU 18HP Long Shaft
- Fuel Capacity: 24 liters
- Material: Aluminum
Best for: Tiller-controlled gas propulsion.
Why it ranks #10: The 18HP 2-stroke includes a 24-liter fuel tank and tools, but its listing targets fishing boats and does not establish sailboat compatibility.
A supplied tiller control puts steering and throttle operation at the motor, giving YUASDUU’s 18HP long-shaft outboard a direct-control setup for boaters who want those controls at hand. Its 246cc two-stroke engine runs at 4,500–5,500 rpm, and the included 24-liter fuel tank supports trips away from shore.
The aluminum-alloy body is described as corrosion, wear, heat, impact, and deformation resistant, supporting use in water. Its muffler reduces operating noise, while the 4,500–5,500 rpm engine range provides the specified operating band. A tiller control keeps steering and throttle at the motor. The package lists a fuel tank, oil pipe, toolkit, accessories, and Chinese user manual. Starting must take place in water, and the roughly 10-hour running-in period calls for avoiding high throttle.
- 18HP, 246cc two-stroke engine
- Tiller control
- 24-liter fuel tank included
- Muffler reduces operating noise
- Must be started in water; the roughly 10-hour running-in period excludes high-throttle use.
Skip it if you need an engine that can be started ashore or run hard immediately; those steps conflict with its stated instructions.
A candidate for boaters wanting an 18HP gasoline outboard with tiller control and a listed fuel tank and toolkit. It suits buyers able to start it in water and observe the low-throttle running-in period.
Full product details
| Brand | YUASDUU |
|---|---|
| Color | Black |
| Fuel Capacity | 24 liters |
| Included Components | 1* Chinese User Manual, 1* Fuel Tank, 1* Outboard Engine 1* Oil Pipe, 1* Tool Kit, All Needed Accessories |
| Manufacturer | YUASDUU |
| Part Number | 2 Stroke 18HP Outboard Motor |
| Manufacturer Warranty Description | No |
| Material | Aluminum |
| Model Number | Outboard Motor |
Listed on Amazon as: 2 Stroke 18HP Outboard Motor, 246CC Heavy Duty Fishing Boat Engine with CDI Ignition System Long Shaft Outboard Motor Boat Engine with Water Cooling System Tiller Control, 4500-5500RPM
View on AmazonAvoid the shaft-length compatibility trap
Do not treat the words long shaft as proof that an outboard will fit your sailboat. Of these listings, the Sootvp 7HP Long Shaft gives a stern-plate height range of 17.72–21.65 inches, but that is not stated as a measured shaft length. The other products are described as long shaft without a comparable shaft measurement in the supplied details.
Measure the boat’s transom using the motor maker’s instructions, then confirm the required shaft category and actual dimension with the seller. A mismatch can place the propeller at the wrong depth, affecting how it operates; the provided product data does not establish the fit for any particular sailboat.
Also verify mounting, clearance, and whether your boat maker permits the selected motor. These checks matter more than comparing horsepower alone, because a powerful engine cannot compensate for incompatible mounting or shaft dimensions.
Plan around engine type and operating requirements
The main trade-off in this group is between gas-engine power and an electric setup with different operating needs. Most listed gas options are 18HP two-strokes; the Sootvp 7HP Long Shaft and SRTYGHW 9HP Long Shaft are four-strokes, while the Newport NT300 Electric is rated at 3HP equivalent and 110 pounds of thrust. The YUASDUU 18HP Long Shaft listing specifically says its two-stroke requires gasoline mixed with two-stroke oil and should be started in water; it also advises avoiding high throttle during an approximately 10-hour running-in period.
The Newport listing specifies 36V but does not provide a battery capacity in the supplied facts, so its claimed range cannot by itself establish a suitable passage duration. Confirm fuel or battery arrangements, maintenance instructions, and operating restrictions before relying on any option as auxiliary propulsion.
How to Choose a Sailboat Outboard
Shaft and transom fit
Look for a stated shaft or transom measurement and compare it with your boat before weighing horsepower. The Sootvp 7HP Long Shaft gives a stern-plate height range of 17.72–21.65 inches; the remaining listings identify as long shaft but do not give a comparable shaft measurement in the supplied data. That makes Sootvp the most useful starting point for a buyer whose transom falls in that range, not a guaranteed fit.
If your boat’s measurement is outside it, ask the manufacturer or seller for the motor’s actual shaft dimension and compatibility guidance. Buyers with a known, verified fit can then compare the power and fuel options; anyone without that confirmation should make fit the deciding factor.
Power and engine type
Choose power and engine type to suit your boat and intended use rather than assuming more horsepower is better. This group spans a 3HP-equivalent electric motor, 7HP and 9HP four-strokes, and several 18HP two-strokes. Newport specifies 110 pounds of thrust and 36V; Sootvp lists 7HP and sailboat use; SRTYGHW lists 9HP; the 18HP options are generally described for fishing boats and small craft.
Buyers prioritizing a directly stated sailboat application should start with Sootvp, while those seeking electric propulsion can compare Newport’s setup requirements. A higher-power listing may interest a buyer with a compatible boat and a demonstrated need, but these product details do not establish a suitable horsepower for any particular sailboat.
Fuel or electrical setup
Check the motor’s fuel capacity or electrical requirements against the trips you plan and the equipment you can carry. Several 18HP gas listings specify a 6.34-gallon or 24-liter tank; the SRTYGHW 9HP has a 1.5-liter tank, and Sootvp specifies 1.4 liters. Newport requires 36V, but the supplied listing does not state battery capacity.
The larger listed gas tanks may suit buyers who want more onboard fuel capacity, while the smaller-tank models may fit a different arrangement; capacity alone does not establish actual range or consumption. Electric buyers should establish battery capacity, charging arrangements, and expected runtime before choosing Newport.
Two-stroke buyers should also account for the YUASDUU listing’s gasoline-and-oil mixing instruction.
Which Long-Shaft Outboard Fits Your Sailboat?
Start with the Sootvp 7HP Long Shaft if you want the clearest sailboat-specific match: it names sailboats and lists a 17.72–21.65-inch stern-plate height range. If you prefer electric propulsion and can confirm the battery system, consider the Newport NT300 Electric, which specifies 36V and 110 pounds of thrust. For a higher-power four-stroke option, the SRTYGHW 9HP Long Shaft lists a 1.5-liter fuel capacity, but it does not explicitly identify sailboats.
The 18HP choices offer larger listed fuel tanks on several models, yet their descriptions lean toward fishing boats and other small craft. Before selecting any model, verify shaft dimensions, mounting compatibility, and suitable power for your boat; the listings do not establish those details for a specific sailboat.
Related Buying Guides
Frequently Asked Questions
How do I measure my sailboat transom to choose the correct outboard shaft length?
Measure vertically from the top of the mounting surface where the motor rests to the bottom of the hull directly behind it. Compare that measurement with the motor’s stated shaft length and your boat manufacturer’s guidance. Listings may use different terminology, so confirm the measurement and mounting compatibility with the seller before buying.
How much outboard horsepower does my sailboat need for its displacement and intended conditions?
Use your sailboat manufacturer’s recommended horsepower range as the starting point, then account for displacement, hull design, and expected wind and current. Do not assume that more horsepower is automatically suitable. The listings do not establish power requirements for a particular sailboat, so verify compatibility with the boat manufacturer or a qualified marine professional.
What battery capacity and charging setup does an electric outboard need for a sailboat?
Choose a battery and charger that meet the motor manufacturer’s requirements for voltage, capacity, chemistry, and charging. The Newport NT300 listing specifies 36V and 110 pounds of thrust, but does not state battery capacity or charging details. Confirm those requirements with the seller, and estimate usable runtime from your expected power draw and time underway.
What should I verify about a long-shaft motor before mounting it on a sailboat?
Confirm the exact shaft dimension, transom or stern-plate height compatibility, clamp or bracket fit, and clearance for steering and tilting. The Sootvp listing gives a stern-plate height range of 17.72–21.65 inches but does not state shaft length in inches. Check the measurements against your boat and confirm them with the seller.
Is an electric outboard a suitable choice if my sailboat has no dedicated battery system?
It may be suitable only if you can provide a compatible battery and charging setup. The Newport NT300 listing specifies a 36V system, but the supplied information does not establish battery capacity, charging requirements, or runtime for your boat. Confirm these details with the seller and assess whether your onboard electrical system can support the setup.
Final Words
For the clearest sailboat-specific match, start with the Sootvp 7HP Long Shaft: it names sailboats and lists a 17.72–21.65-inch stern-plate height range, though its shaft length in inches is not stated. Consider the Newport NT300 if electric propulsion fits your plans and you can verify its battery requirements. Other options list more power but lean toward fishing boats.
Confirm shaft dimensions, mounting fit, and suitable horsepower for your sailboat before choosing.


