Seakeeper Gyro Stabilizers

Your Seakeeper Resource — Answers, Sizing & Local Install

MeridianRig is here to help you get the information you need — model comparisons, sizing guidance, and realistic installed cost — before you commit. When you are ready, we connect you with authorized Seakeeper professionals for installation in your area.

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Installation required — quote-based purchase

Seakeeper gyros require structural assessment, seawater cooling plumbing, and electrical sizing. Most models — including the Seakeeper 3 — are sold with installation, not shipped as a standalone unit for DIY checkout. Submit a quote request below and we will follow up with model guidance, realistic installed-cost ranges, and installer referral options in your region.

*Unit MSRP only — not including installation. Sold with professional installation through authorized dealers.

Compare Products

Seakeeper Gyro vs. Seakeeper Ride

MeridianRig sells Seakeeper Ride for transom-mounted underway stabilization on boats up to 30 ft. Full gyros are a different class of product for a different job.

Seakeeper Ride (we sell this) Seakeeper Gyro (quote funnel)
Primary benefit Reduces pitch & roll underway Eliminates up to 95% of roll at anchor and underway
Boat size 19–30 ft 23 ft to 110+ ft (model dependent)
Hardware cost $4,900–$7,900 $17,400–$365,400+ MSRP (unit only)
Typical installed total Hardware + 1–2 day install ~$30,500–$213,000+ (hardware + install)
Purchase path Order online via catalog Quote → certified installer
Shop Seakeeper Ride 450 Shop Seakeeper Ride 525 Seakeeper Ride FAQ
Sizing Guide

Seakeeper Model Quick Reference

Complete per-model breakdowns with specs and install notes are in the model breakdown section below. Model numbers reflect angular momentum (N·m·s) on most units.

Model MSRP Boat size Momentum Power Est. total installed
Seakeeper 1 $17,400 23–30 ft 1,000 N·m·s 12V DC ~$30,500
Seakeeper 2 $26,100 30–36 ft 2,000 N·m·s 12V DC ~$40,700
Seakeeper 3 $40,300 35–41 ft 3,000 N·m·s 12V DC ~$60,000
Seakeeper 4 $47,400 38–44 ft 4,000 N·m·s 12V DC ~$66,400
Seakeeper 4.5 $55,600 40–46 ft 4,500 N·m·s 12V / AC ~$74,600
Seakeeper 6 $69,600 44–52 ft 6,000 N·m·s 12V DC ~$91,600
Seakeeper 10 $126,800 50–62 ft 9,000 N·m·s 208–230V AC ~$156,300
Seakeeper 14 $155,900 55–68 ft 14,000 N·m·s 220V AC ~$185,400
Seakeeper 18 $183,700 60–75 ft 18,000 N·m·s 208–230V AC ~$213,200
Seakeeper 26 $268,600 70–85 ft 26,000 N·m·s 208–230V AC Custom
Seakeeper 40 $365,400 85–110+ ft 40,000 N·m·s 208–230V AC Custom

MSRP is unit price only — Jan 2026 manufacturer pricing. See model breakdown for weight, spool times, and install notes. Installed cost table below.

Not sure which model? Request sizing help Read the full sizing guide (blog)
Total Cost

What You Will Actually Pay (Installed)

Buyers researching online often see MSRP and underestimate the full project cost. These ranges reflect typical U.S. hardware + installation averages; your yard, region, and hull condition will vary.

Model Unit MSRP Typical install Estimated total Annual service
Seakeeper 1 $17,400 ~$13,100 ~$30,500 ~$850
Seakeeper 2 $26,100 ~$14,600 ~$40,700 ~$850
Seakeeper 3 $40,300 ~$19,700 ~$60,000 ~$1,200
Seakeeper 4 $47,400 ~$19,000 ~$66,400 ~$1,200
Seakeeper 4.5 $55,600 ~$19,000 ~$74,600 ~$1,200
Seakeeper 6 $69,600 ~$22,000 ~$91,600 ~$1,200
Seakeeper 10 $126,800 ~$29,500 ~$156,300 ~$1,500
Seakeeper 14 $155,900 ~$29,500 ~$185,400 ~$1,800
Seakeeper 18 $183,700 ~$29,500 ~$213,200 ~$2,000
Seakeeper 26 $268,600 Custom Custom Custom
Seakeeper 40 $365,400 Custom Custom Custom

Install averages from certified dealer published pricing (2026). Seakeeper 26 and 40 require vessel-specific engineering and yard quotes. Also budget for haul-out, structural work, AC electrical upgrades on yacht models, and seawater cooling plumbing.

Model Breakdown

Every Seakeeper Model — Seakeeper 1 Through Seakeeper 40

Seakeeper assigns model numbers to angular momentum (N·m·s) on most units. All models below are sold with professional installation through authorized dealers. MSRP and install averages reflect Jan 2026 U.S. pricing; large-yacht installs (26 and 40) are quoted per vessel.

Recreational line — 12V DC (23–52 ft)

No generator required on most installations. Ideal for center consoles, express cruisers, and sportfishing boats.

Seakeeper 1

$17,400 MSRP
Boat size
23–30 ft
Angular momentum
1,000 N·m·s
Unit weight
365 lb (166 kg)
Power
12V DC · up to 50A spool-up
Spool to stabilization
~18 min
Est. installed total
~$30,500

Smallest Seakeeper — flush-mount design for tight console and leaning-post installs. Optional deck-mount enclosure for open-framed helm stations. Entry point for solo operators and small center consoles wanting at-anchor stability.

Request quote — Seakeeper 1

Seakeeper 2

$26,100 MSRP
Boat size
30–36 ft
Angular momentum
2,000 N·m·s
Unit weight
414 lb (188 kg)
Power
12V DC · up to 71A spool-up
Spool to stabilization
~19 min
Est. installed total
~$40,700

25% lighter and 20% smaller than the original Seakeeper 3 platform — built for mid-size center consoles and coastal express boats. Eliminates up to 95% of roll at anchor and underway.

Request quote — Seakeeper 2

Seakeeper 3

$40,300 MSRP
Boat size
35–41 ft · up to ~10.5 tons
Angular momentum
3,000 N·m·s
Unit weight
550 lb (249 kg)
Power
12V DC · up to 85A spool-up
Spool to stabilization
~29–36 min
Est. installed total
~$60,000

Historically the best-selling Seakeeper. Leaning-post refit option made gyro stabilization accessible on popular 34–40 ft fishing and cruising hulls. Sold with installation — not available as a standalone purchase through authorized dealers.

Request quote — Seakeeper 3

Seakeeper 4

$47,400 MSRP
Boat size
38–44 ft · up to ~15 tons
Angular momentum
4,000 N·m·s
Unit weight
746 lb (338 kg)
Power
12V DC · up to 88A spool-up
Spool to stabilization
~34 min
Est. installed total
~$66,400

2025 flagship efficiency model — more stabilization force than the Seakeeper 3 in a similar install envelope. Best $/N·m·s in the recreational range. Fits many hulls that previously spec'd a Seakeeper 3.

Request quote — Seakeeper 4

Seakeeper 4.5

$55,600 MSRP
Boat size
40–46 ft
Angular momentum
4,500 N·m·s
Unit weight
736 lb (334 kg)
Power
12V DC or AC options · vessel dependent
Spool to stabilization
~19 min
Est. installed total
~$74,600

Latest-generation platform for larger outboard and small inboard express boats. Sized for vessels that outgrew the Seakeeper 4 but do not yet need a Seakeeper 6. AC-power variant available for boats with onboard generators.

Request quote — Seakeeper 4.5

Seakeeper 6

$69,600 MSRP
Boat size
44–52 ft
Angular momentum
6,000 N·m·s
Unit weight
870 lb (395 kg)
Power
12V DC · up to ~88A spool-up
Spool to stabilization
~28 min
Est. installed total
~$91,600

Step-up unit for large center consoles, sportfish express boats, and coastal cruisers approaching 50 ft. Bridge between the recreational DC line and the yacht AC-powered models.

Request quote — Seakeeper 6

Mid-size yacht line — AC power (50–68 ft)

208–230V single-phase input on gyro motor. Requires adequate onboard AC capacity or shore power when spooling at the dock.

Seakeeper 10

$126,800 MSRP
Boat size
50–62 ft
Angular momentum
9,000 N·m·s
Unit weight
~1,210 lb (550 kg)
Power
208–230V AC · 24V DC control
Spool to stabilization
~38 min
Est. installed total
~$156,300

Current-generation 9,000 N·m·s platform for sportfish and cruising yachts in the 50–62 ft band. Popular on new-build Viking, Hatteras, and custom sportfish specifications.

Request quote — Seakeeper 10

Seakeeper 14

$155,900 MSRP
Boat size
55–68 ft
Angular momentum
14,000 N·m·s
Unit weight
1,757 lb (797 kg)
Power
220V AC · 24V DC control
Spool to stabilization
~24 min
Est. installed total
~$185,400

Bridges the gap between Seakeeper 10 and 18 — 43% smaller and 33% lighter than the Seakeeper 18 with 14,000 N·m·s output. Ideal when a 60–65 ft yacht needs more force than a 10 but cannot accommodate an 18.

Request quote — Seakeeper 14

Large yacht line — high-output AC (60–110+ ft)

Custom engineering surveys, structural analysis, and yard-specific install quotes. Typical projects span multiple weeks.

Seakeeper 18

$183,700 MSRP
Boat size
60–75 ft
Angular momentum
18,000 N·m·s
Unit weight
2,460 lb (1,116 kg)
Power
208–230V AC · 24V DC control
Spool to stabilization
~31 min
Est. installed total
~$213,200

Standard specification on many 60–70 ft production motoryachts and sportfish builds. Dual-unit installations common on 70+ ft platforms requiring redundancy or extreme displacement.

Request quote — Seakeeper 18

Seakeeper 26

$268,600 MSRP
Boat size
70–85 ft
Angular momentum
26,000 N·m·s
Unit weight
3,155 lb (1,431 kg)
Power
208–230V AC · 24V DC control
Spool to stabilization
~55 min
Est. installed total
Custom quote

Flagship mid-superyacht unit for 70–85 ft displacement cruisers and expedition yachts. Install requires dedicated machinery space, structural reinforcement, and custom seawater cooling routing.

Request quote — Seakeeper 26

Seakeeper 40

$365,400 MSRP
Boat size
85–110+ ft
Angular momentum
40,000 N·m·s
Unit weight
4,074 lb (1,848 kg)
Power
208–230V AC · 24V DC control
Spool to stabilization
~49 min
Est. installed total
Custom quote

Largest production Seakeeper — specified on 85 ft+ motoryachts and superyacht refits. Often paired with a second unit on 100 ft+ platforms. Full naval-architect and yard integration required.

Request quote — Seakeeper 40

Discontinued models (Seakeeper 5, 9, 16, 35) are no longer in production — contact an authorized dealer for service parts or replacement sizing. Your installer recommends the best current model for displacement and machinery space.

35–44 ft Decision

Seakeeper 3 vs. 4 vs. Dometic DG3

The 35–41 ft band is where demand concentrates. Three systems compete directly — each with different trade-offs on spool time, power draw, and technology.

Seakeeper 3 Seakeeper 4 Dometic DG3
MSRP $40,300 $47,400 ~$44,000
Boat size 35–41 ft 38–44 ft 35–41 ft
Angular momentum 3,000 N·m·s 4,000 N·m·s 3,000 N·m·s
Spool to stabilization ~29–36 min ~34 min ~9.5 min
Full spool-up ~50 min ~60 min ~16.5 min
Operating power 400–900W 550–1,050W 260–750W
Technology Hydraulic precession Hydraulic precession All-electric; no hydraulics
MFD integration NMEA 2000 (ConnectBox) NMEA 2000 (ConnectBox) Ethernet to MFD
Best for Proven installed base; leaning-post refits Maximum force; best $/N·m·s Fast spool; lower running power; frequent anchoring
Quote — Seakeeper 3 Quote — Seakeeper 4 Quote — Dometic DG3
Learn More

Seakeeper Guides & Articles

Long-form buying guides on gyro sizing, Seakeeper Ride, installation expectations, and stabilization planning — separate from the quote funnel above.

View all Seakeeper guides
FAQ

Common Questions

No — not through MeridianRig or most authorized channels. Seakeeper gyros require professional installation for structural fit, seawater cooling, electrical sizing, and warranty commissioning. The Seakeeper 3 and most recreational models are sold with installation, not as standalone units.
Seakeeper estimates 1–3 weeks for a typical gyro refit depending on yard schedule, hull access, and electrical work. Smaller boats with leaning-post installations can sometimes complete in a few days once parts and yard time are booked.
Seakeeper 1–6 run on 12V DC — no generator required for spool-up on most recreational installs. Seakeeper 10 and larger use 208–230V AC gyro motors and need adequate onboard generator or shore power during spool-up. Size house banks for DC models (50–88A peak); verify AC panel capacity for yacht models.
Model sizing guidance, realistic installed-cost expectations, and connection to certified installers in your region. We also sell complementary equipment you may need in the same refit — Victron power systems, Garmin and Simrad chartplotters, and Seakeeper Ride for smaller boats.
If displacement and install space allow, the Seakeeper 4 delivers more angular momentum (4,000 vs. 3,000 N·m·s) in a similar footprint — often the better value on a $/N·m·s basis. A certified installer confirms structural capacity and electrical headroom before you choose.
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