Seakeeper 1 Stabilizer
Seakeeper 1 Stabilizer
The Seakeeper 1 is a compact, lightweight, and highly effective gyro stabilizer designed to virtually eliminate boat roll by up to 95%. For 12-metre vessels, it provides unmatched safety, comfort, and reliability in rough seas without the drawbacks of traditional fin stabilizers.
Deck Mount Enclosure
The optional Seakeeper 1 Deck Mount Enclosure enables installation in non-enclosed spaces. Without it, the unit must be installed in a covered location such as a bilge, console, or enclosed leaning post to protect from salt, water, and UV exposure. This innovation allows stabilization for boats with open-framed layouts.
Key Features
- Small & Lightweight – Only 365 lbs (166 kg), a fraction of boat displacement.
- Eliminates Roll – Removes up to 95% of boat roll, reducing seasickness, fatigue, and anxiety.
- Flexible Installation – Fully internal, no external fins, and can be installed virtually anywhere.
- Innovative Cooling System – Patented system allows ultra-high flywheel speeds in a small footprint.
- Vacuum Sealed – Enables higher flywheel speed, reduced weight, and lower power needs, with critical components isolated from the marine environment.
- Active Control – Optimized gyro torque for all speeds and sea states, unlike passive gyros that must be disabled in rough conditions.
- Intuitive Dash Display – Simple push-button control integrated into vessel dashboards.
Benefit for 12-Metre Boats: Seamlessly integrates into medium-sized vessels, giving commercial and leisure operators confidence to operate safely in demanding offshore conditions.
Technical Specifications
| Max Rated Speed | 9,750 RPM |
|---|---|
| Angular Momentum | 1,000 N-M-S at max RPM |
| Spool-Up to Max RPM | 35 minutes (9,750 RPM) |
| Spool-Up to Stabilization | 18 minutes (7,310 RPM) |
| Power (Spool-Up) | 600 W max / 12 VDC @ 50 A |
| Power (Operating) | 225 – 600 W depending on sea state |
| Cooling | Seawater supply 2–4 GPM (7.6–15.1 LPM) |
| Weight | 365 lbs (166 kg) |
| Dimensions | 22.9” L × 23.6” W × 15.9” H (0.582 × 0.598 × 0.403 m) |
| Noise Output | ~64 dB @ 1 m |
| Ambient Temperature | 32° – 140° F (0° – 60° C) |
Seakeeper 1 vs Traditional Fin Stabilizers
This comparison highlights the advantages of installing the Seakeeper 1 on 12-metre boats versus using conventional external fin stabilizers.
| Factor | Seakeeper 1 Gyro Stabilizer | Traditional Fin Stabilizers |
|---|---|---|
| Installation | Completely internal, compact unit. Can be fitted almost anywhere, including deck enclosure. | External hull modifications required. Placement limited by hull shape and underwater profile. |
| Roll Reduction | Up to 95% roll elimination at all speeds, including when at rest. | Most effective underway; limited benefit when stationary at anchor. |
| Maintenance | Vacuum-sealed components isolated from saltwater. Lower ongoing maintenance. | Exposed moving parts and actuators in seawater require frequent inspection and servicing. |
| Drag / Efficiency | No added drag since all systems are internal. Fuel efficiency unaffected. | Added underwater fins increase drag, reducing speed and raising fuel consumption. |
| Space Impact | Compact footprint (22.9” × 23.6” × 15.9”), only 166 kg weight. | Requires large actuators and hydraulics, impacting interior space allocation. |
| Performance in Heavy Seas | Active control allows continuous operation in all sea states. | Must sometimes be disengaged in very rough seas or at high speed to prevent damage. |
| User Control | One-touch dash display integration. Intuitive and automated. | Manual or semi-automated fin adjustments, more operator input required. |
| Impact on Hull Integrity | No external hull penetrations beyond cooling lines. | Large hull cut-outs needed for fin shafts and housings, weakening structure. |
| Noise | ~64 dB at 1 m (quiet hum). | Hydraulic pumps and fin actuation often louder. |
Bottom Line for 12-Metre Boats: The Seakeeper 1 offers superior stabilization at rest, reduced maintenance, no drag penalty, and easier installation compared to traditional fin stabilizers. For operators of 12-metre vessels seeking maximum comfort, efficiency, and safety, Seakeeper is the clear choice.
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