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- ERV250 eVision retract bow/stern thruster 48V
Unless you vessel is prepared from the builder with a custom base, you will need the mold-in base for installing your retract.
Thrusters
ERV250 eVision retract bow/stern thruster 48V
250kg variable thrust
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S-LINK™
S-Link™ is a CAN-based control system used for communication between Sleipner products installed on a vessel.
- Compact and waterproof plugs
- Keyed and color-coded connectors to ensure correct and easy installation
- Different cable lengths, extenders and T-connectors makes the system scalable and flexible to install
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Q-PROP™
The Q-PROP™ has measured noise reductions of up to 75% in controlled environments. The five-bladed skew propeller reduces noise levels while maintaining exceptional efficiency. Some thruster models even see an increase in thrust power.
- The expected noise reduction in average installations: 20-40%
- Upgrade kits are available for most Sleipner thruster models with special adaptors
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PRO™
A PRO™ thruster system enables you to apply only the necessary power to complete your maneuver. The variable speed control eliminates the noise associated with standard on/off thrusters.
The system also includes a practical hold-function. In a dual system (bow and stern) a single press of a button will keep you alongside the docks - making docking truly a one-person job.
Speed controlled thrusters are the best choice for joystick interaction. -
OVERHEAT PROTECTION
When high temperatures are detected, On/off thrusters are automatically shut off to prevent overheating. PRO™ thrusters with speed control provide extended run-time by derating power to maintain temperature within safe levels.
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GALVANIC SEPARATION
Immersed parts exposed to seawater are galvanic isolated from the onboard electrical system, eliminating stray currents.
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GRAVITY FEED LUBRICATION
The thruster gearleg is supplied with oil from a separate reservoir above the waterline to monitor oil levels.
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FLEXIBLE COUPLING
Flexible coupling protects the product’s driveline by compensating for minor misalignments between the shafts of the thruster motor and gearleg.
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TWIN COUNTER-ROTATING PROPELLERS
Two counter-rotating propellers offer the most thrust at a good performance ratio in a minimal tunnel diameter. This system is used in our larger thrusters for maximum power. Our twin-counter thruster range is the favorite among leading boatbuilders in high-end yachts.
Item code: ERV250/300TC-48V
The ERV250 is a highly efficient, compact, lightweight retract thruster suitable for boats between 72-100 feet. The integrated inverter for variable speed control makes for a quick and easy installation.
ERV250 has the new 6-phase PMSM synchronous motor made explicitly for marine thruster use, delivering performance and runtime never seen before in a DC thruster. The unit is designed for vertical installation, making it perfect for boats with available height space.
- Up to 50% lighter
- Compact design
- Industry-leading runtime
- Active air cooling
X-Yachts on Sleipner’s ERV100 Thrusters for the XC-47 Sailboat
X-Yachts shares their experience with Sleipner’s advanced ERV100 retract thrusters, highlighting the ease of single-handed sailing with proportional control and the hold function. Discover why Sleipner’s technology is their trusted choice for precision and solo sailing.
Properties
S-LINK™
S-Link™ is a CAN-based control system used for communication between Sleipner products installed on a vessel.
- Compact and waterproof plugs
- Keyed and color-coded connectors to ensure correct and easy installation
- Different cable lengths, extenders and T-connectors makes the system scalable and flexible to install
Q-PROP™
The Q-PROP™ has measured noise reductions of up to 75% in controlled environments. The five-bladed skew propeller reduces noise levels while maintaining exceptional efficiency. Some thruster models even see an increase in thrust power.
- The expected noise reduction in average installations: 20-40%
- Upgrade kits are available for most Sleipner thruster models with special adaptors
PRO™
A PRO™ thruster system enables you to apply only the necessary power to complete your maneuver. The variable speed control eliminates the noise associated with standard on/off thrusters.
The system also includes a practical hold-function. In a dual system (bow and stern) a single press of a button will keep you alongside the docks - making docking truly a one-person job.
Speed controlled thrusters are the best choice for joystick interaction.
OVERHEAT PROTECTION
When high temperatures are detected, On/off thrusters are automatically shut off to prevent overheating. PRO™ thrusters with speed control provide extended run-time by derating power to maintain temperature within safe levels.
GALVANIC SEPARATION
Immersed parts exposed to seawater are galvanic isolated from the onboard electrical system, eliminating stray currents.
GRAVITY FEED LUBRICATION
The thruster gearleg is supplied with oil from a separate reservoir above the waterline to monitor oil levels.
FLEXIBLE COUPLING
Flexible coupling protects the product’s driveline by compensating for minor misalignments between the shafts of the thruster motor and gearleg.
TWIN COUNTER-ROTATING PROPELLERS
Two counter-rotating propellers offer the most thrust at a good performance ratio in a minimal tunnel diameter. This system is used in our larger thrusters for maximum power. Our twin-counter thruster range is the favorite among leading boatbuilders in high-end yachts.
| Weight | Value |
|---|---|
| Net weight | 122.3kg / 269.6lbs |
| Battery | Value |
|---|---|
| Operational voltage | ["48V", ""] |
| Cold Cranking Amps (CCA) | Value |
|---|---|
| Minimum battery CCA (DIN) | 350 |
| Minimum battery CCA (SAE) | 665 |
| Minimum battery CCA (EN) | 595 |
| Compliance | Value |
|---|---|
| CE | Yes |
| UKCA | Yes |
| Current draw | Value |
|---|---|
| Standard current draw | 350A |
| Dimensions | Value |
|---|---|
| (H) Height | 453mm / 17.8in |
| (+H) Additional Height | 117mm / 4.6in |
| (L) Length | 843mm / 33.19in |
| (W) Width | 580mm / 22.83in |
| (ID) Internal Diameter | 300mm / 11.81in |
| (WD min.) Minimum Water Depth | 300mm / 11.81in |
| (RD) Retract Depth | 454mm / 17.9in |
| (RW) Retract Width | 415mm / 16.34in |
| (MW) Mould Width | 486mm / 19.1in |
| (MH) Mould Height | 115mm / 4.5in |
| Electrical Data Matrix | Value |
|---|---|
| Recommended fuse | ANL 325 |
| Ideal vessel integration | Value |
|---|---|
| Typical vessel class | Motor boat, Sail boat |
| Typical vessel size | 22-30m / 72-100ft |
| Installation capability | Value |
|---|---|
| Bow Capability | Yes |
| Stern Capability | Yes |
| Retractable Capability | Yes |
| External Mounting Capability | No |
| Tunnel Capability | No |
| Motor | Value |
|---|---|
| Voltage electric motor | 48V DC |
| Power Output | 11.0kW / 14.9hp |
| Performance | Value |
|---|---|
| Items operating power source | Electric |
| Product Features | Value |
|---|---|
| Intelligent Power Control | No |
| Q-Propeller | Yes |
| Single Propeller | No |
| Twin Propellers | No |
| Twin Counter Rotating Propellers | Yes |
| Gravity Feed Lubrication | Yes |
| Sealed Drive Lubrication | No |
| Galvanic Separation | Yes |
| IP - Ignition Protection | No |
| PRO - Variable Speed Control | Yes |
| S-Link | Yes |
| Analog | No |
| Splash-Proof | No |
| Flexible Coupling | Yes |
| Safe Start-Up | No |
| DC Electrical | Yes |
| Hold Thrust | No |
| Ceramic Seals | No |
| Patented Design | No |
| Intelligent Power Control Plus | Yes |
| Thrust ratings | Value |
|---|---|
| Thrust at 48V | 250kg / 551lbs |
| Thrust at 42V | 250kg / 551lbs |
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Installation Manual, ERV (300)
Installation ManualEnglishpdf -
User Manual, Retract E-Vision
User ManualEnglishpdf -
DNV Type Approval Tunnel thruster
Conformity Certificate, Product sheetEnglishpdf -
STL.file ERV250/300TC-48V Simplified 3D
CAD FileEnglishstl -
Joystick integration overview for Sleipner thruster systems
Service/Support ManualEnglishpdf -
PDF.file ERV250/300TC-48V metadata
Technical drawingEnglishpdf -
User Manual, Retract E-Vision - SPANISH
User ManualSpanishpdf -
User Manual, Retract E-Vision - ITALIAN
User ManualItalianpdf -
User Manual, Retract E-Vision - GERMAN
User ManualGermanpdf -
User Manual, Retract E-Vision - FRENCH
User ManualFrenchpdf -
Doc Declaration of conformity (CE) - eVision
Conformity Certificatepdf -
DoC Declaration of conformity (UK) - eVision
Conformity Certificatepdf -
STP.file ERV250/300TC-48V Open Simplified
CAD Filestp
ERV250 eVision retract bow/stern thruster 48V
Guide to navigating spare parts
Below you will see the top-level assembly of spare part groupings available to you. If you desire a component within the presented assembly group, click on the name tag below the image to be directed to a detailed spare parts list for that assembly group. If no additional spare parts are available, it means that the current assembly group must be purchased as a whole due to service or installation requirements.
Bolt
Spring washer
Washer
1 E250 eVision Motor 48V
Bolt
Spring lock washer
Lifting bracket
Top Cover assembly
Parallel key
2 Retract mechanical SRV300 Common
DIN 912 - M4 x 12
Cable actuator
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DIN 125 - A 13
DIN EN ISO 1234 - 3,2x20
Locking bolt
DIN 913 - M4 x 20
DIN 985 - M4x0,7
M4 x 25 A4
DIN 127 - A 4
DIN 125 - A 4,3
ISO 10642 - M4 x 30
Cable SRV/SRH 300
3 Powercable nut assembly
Nut
Spring washer
Washer
4 Front cover assembly
Bolt
Front Cover
M6 Lock plate
5 Retract Horizontal Shaft Kit - 300mm
DIN 7991 - M4x12 A4
Parallel key DIN 6885
Lifting arm PS
DIN 125 - A 29
Lifting arm SB
Position marker
DIN 912 - M5 x 8
6 Upper vertical drive shaft kit SRV300
DIN 912 - M6 x 20
DIN 125 - A 6,4
Tool for ball bearing mounting
DIN 471 - 25x1,2
SKF 2RS1W 61805-2RS1
DIN 472 - 35 x 1,5
DIN 3760 - AS - 25 x 35 x 7 - NBR - Stainless
Slide bearing
Vertical drive shaft Assembly
DIN EN ISO 1234 - 3,2x12
Lower drive shaft joint
DIN 7 - 10 x 32 m6
DIN 6885 - A 6 x 6 x 20
Pin Ø8 L46,2
7 Anode kit, aluminium aloy (Al-Zn-In)
Alu anode
Bolt
8 Tunnel kit retract Ø300mm TC, complete
DIN EN ISO 1234 - 3,2x20
DIN 3771 - 48,9 x 2,62 - NBR
Turn ring Ø45
Wype Ring
Tunnel bracket
DIN EN ISO 1234 - 6,3x44
DIN EN ISO 1234 - 3,2x12
Ø8 x 46,2 mm
Lower drive shaft joint
DIN 7 - 10 x 32 m6
O-ring 12,5 x 1,8
Blind plug
Tunnel
Bushing for drive pins
9 Horizontal shaft sealing bushing kit
DIN EN ISO 1234 - 3,2x20
Sleeve bearing Ø50 ø45 L50
DIN 3771 - 48,9 x 2,62 - NBR
Turn ring Ø45
Wype Ring
Sleeve bearing Ø32 Ø28 L20
Thrust Washer Ø48 Ø28 W=1,5 8Igludur X)
DIN EN ISO 1234 - 6,3x44 (A4)
Pin Ø8 L46,2
DIN EN ISO 1234 - 3,2x12 (A4)
10 Retract ring kit Ø300mm
Sleeve bearing
Thrust washer
DIN 933 - M10 x 20 (A4)
DIN 934 - M10 (A4)
DIN 7991 - M10x70 A4
Connecting rod
Twist ring
DIN 125 - A 10,5 (A4)
DIN 985 - M10x1,5 (A4)
11 Gearleg SRV300 replacement kit
Bushing for drive pins
12 Gearleg SRV300TC w/out propeller
DIN 912 - M10 x 60
DIN 127 - A 10
DIN 125 - A 10,5
Bolt w/copper gasket
DIN 125 - A 17
DIN 985 - M16x2
13 Service kit retract 300mm
Wyper ring
O-ring 41,28x3,53
DIN 3760 - AS - 40 x 50 x 7 - NBR - Stainless
Inverted Internal Circlip DIN 5008 50x2
O-ring Ø50x4
Disclaimer
Sleipner warranties the original spare parts supplied only. The installer alone has responsibility for the installation of the spare parts. Do not attempt to fit replacement parts unless you are competent. If the spare part is fitted incorrectly, Sleipner Group will not be liable for any damage resulting.
The information given in the document was correct at the time it was published. However, Sleipner Group cannot accept liability for any inaccuracies or omissions it may contain. Continuous product improvement may change the product specifications without notice. Consequently, Sleipner Group cannot accept liability for any possible differences between product and document.
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Not necessarily. These systems typically come with a Battery Management System (BMS) that will disconnect the thruster in case of any issue with the battery (for instance, if the thruster draws more current than the BMS allows). Just imagine a sudden cut-out in the middle of a maneuver without any pre-warning.
At Sleipner, we recommend a solution with a simple, separate battery and without a disconnect BMS system (such as the lead acid bank frequently used for starting or similar). The helmsman will then be warned when the battery is getting low and feel that the thrusters are gradually losing power, which is significantly better than losing your thrusters without any pre-warning.
Disclaimer: Ensure battery/energy source is installed according to CE/ISO current rules and regulations and by licensed electricians.
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Yes, you can, but not without taking some precautions. Sleipner produces two product lines of thrusters that will work well with high-capacity batteries and one product line which should be used with caution in combination with LiFePO4, Lithium, Li-ion, or similar batteries, which may be capable of delivering higher voltage under load than traditional batteries (such as lead-acid, AGM, gel or similar).
- All Sleipner proportional thrusters will work well with Li-ion or LiFePO4 batteries, as the included PPC unit will control the output voltage to a safe level for the thruster. Make sure, though, that you actually get a good battery intended for maritime use. NB - make sure you have the latest embedded software installed.
- All Sleipner eVision thrusters have built-in functionality to limit the maximum voltage delivered to the thruster. Again, make sure your battery is intended for maritime use.
- Traditional DC on/off thrusters may be damaged or have a reduced life expectancy if operated at voltage levels outside their specifications.
Disclaimer: Ensure battery/energy source is installed according to CE/ISO current rules and regulations and by licensed electricians.
- All Sleipner proportional thrusters will work well with Li-ion or LiFePO4 batteries, as the included PPC unit will control the output voltage to a safe level for the thruster. Make sure, though, that you actually get a good battery intended for maritime use. NB - make sure you have the latest embedded software installed.
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Yes. Most engineers would tell you that it is not ideal for connecting the bow thrusters to a service bank protected by a Battery Management System. Thrusters are heavy consumers, and they may create sudden peaks in current draw, which again may cause the BMS to disconnect the batteries if the thruster draws more current than allowed. If this happens in the middle of a maneuver, you would be left without thrusters and may lose control of the boat.
Hence, Sleipner recommends that the thrusters be connected to a separate battery bank (that is not lithium) without a Battery Management System that can disconnect the batteries (and consequently the thrusters).
Disclaimer: Ensure battery/energy source is installed according to CE/ISO current rules and regulations and by licensed electricians.
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S-link is a Sleipner CAN BUS based control system with full intelligent communication between all devices within the system, much like a computer network. It is used for all retract thrusters and Pro thrusters with a DC control system.
Main advantages include:
• Round, compact and waterproof plugs with unique keying and color coding to avoid faulty hookups.
• An unlimited number of commands or information transfer on a single cable.
• It has user feedback to panel
• Intelligent troubleshooting
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Sleipner recommends that the thrusters are connected to a battery bank that is not protected by a Battery Management System (BMS). Typically this means lead-acid, AGM, gel, or similar kinds of batteries. This is important because thrusters draw a lot of currents quickly, and the high amp draw may lead the BMS system to think that there is an issue with the system and consequently disconnect the batteries from the circuit, in which case you would lose maneuverability.
If you have Lithium batteries powering your thrusters, the best advice we can give you is to check the actual voltage measured on the thrusters during operation. Sleipner thrusters are designed to operate within a specific voltage range, and as long as you are within these boundaries, it doesn’t matter for the thruster if the current is delivered by this or that battery pack.
It may also be a very good idea to check the actual current drawn from the battery during full power at the thruster to see that you are not at the limit for the BMS to avoid sudden loss of maneuverability if the BMS disconnects the battery.
With installations where the battery pack is far from the thruster, the higher voltage delivered by LiFePO4 or similar batteries might not be a problem as you will experience a voltage drop through the long cables.
Always make sure you measure your voltage on the thruster to avoid the risk of early thruster wear.
As battery tehcnology is changing rapidly, we always recommend consulting a professional battery supplier.
Disclaimer: Ensure battery/energy source is installed according to CE/ISO current rules and regulations and by licensed electricians.
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A legacy that commits
We’ve lived and worked with the unruly sea for a hundred years. That’s why we develop important features that enables a boat to handle the sea better – that enable you to enjoy your boat, at anchor and at full speed. That is why you wanted a boat, isn’t it?
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Beautiful engineering
The technology in our solutions is world-class. We know, because we’ve developed it ourselves, just as we manufacture every solution, and follow them until their fixed to a hull, ourselves. This meticulous attention to detail is why your day out always will be better with a Sleipner aboard.
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Worldwide service
We take pride in our solutions’ function throughout their lifespan. So, we never really let them out of sight, even when they’ve left for distant shores. Our global network is there to ensure continuous optimal function. You know what you get with a Sleipner, today and tomorrow.