The Architectureof Contrast

High-end autonomous contrast baths. Hot, Cold. Built with world-class materials and uncompromising ergonomics.
Trusted by five-star hotels, elite sports, and UHNW residences worldwide.

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RoceanBox

Monolithic contrast plunge in marine-grade composite — hot or cold.

RoceanBath

Full-body contrast bath in marine-grade composite — hot or cold.

Rocean Box — Technical Specifications

Dimensions & Capacity

Dimensions138 × 82.5 × 87 cm — 54.3″ × 32.5″ × 34.3″
Volume400 L / 105.7 gal
Empty weight80 kg / 176 lbs
Full weight480 kg / 1,058 lbs
Temperature3°C to 40°C — cold plunge to hot bath. Cooling rate −4°C/h. Auto-regulation via touchscreen or app.

System & Technology

NoiseUltra-silent — under 50 dB. Optimised fan blade selection.
Insulation±2°C/day variation. No condensation.
Cooling unit900 W — 230 V, 50/60 Hz — 3.8 A. Compatible with US power via step-up adapter (110→230 V). Avg. 2 kWh/day. IPX4.
MaterialsFiberglass shell, vinylester resin & naval gelcoat, PVC sandwich, high-density PU foam insulation.
Water treatmentDual-stage filtration — pre-filter + 20-micron cartridge. UV lamp standard. Chemical auto-treatment optional.
ControlTouchscreen + smartphone app. Full auto-regulation. Rocean OS.
PlatformHigh-flow pump filtering water 3× per hour. Rotational current for optimal cold sensation.
Warranty2 years on systems — 10 years on composite shell.
Available in standard or fully bespoke execution.
Rocean Bath — Technical Specifications

Dimensions & Capacity

Dimensions215 × 82.5 × 66 cm — 84.6″ × 32.5″ × 26″
Volume400 L / 105.7 gal
Empty weight80 kg / 176 lbs
Full weight480 kg / 1,058 lbs
Temperature3°C to 40°C — cold plunge to hot bath. Cooling rate −4°C/h. Auto-regulation via touchscreen or app.
MaterialsFiberglass shell, vinylester resin & naval gelcoat, PVC sandwich, high-density PU foam insulation.
Warranty2 years on systems — 10 years on composite shell.

System & Technology

Power900 W — 230 V, 50/60 Hz — 3.8 A. Compatible with US power via step-up adapter (110→230 V). Avg. 2 kWh/day. Refrigerant R140A. IPX4.
NoiseUltra-silent — under 50 dB.
Insulation±2°C/day variation. No condensation.
Water treatmentDual-stage filtration — pre-filter + 20-micron cartridge. UV lamp standard. Chemical auto-treatment optional.
ControlTouchscreen + smartphone app. Full auto-regulation. Rocean OS.
PumpHigh-flow pump filtering water 3× per hour. Rotational current for optimal cold sensation.
Platform900 W — 230 V, 50/60 Hz — 3.8 A. Avg. 2 kWh/day. Refrigerant R140A.
Available in standard or fully bespoke execution.
Rocean technical drawingRocean filtration drawing

Bespoke projects

Custom dimensions, materials, finishes. From first sketch to on-site commissioning. We also supply systems only — with all our intelligent technology embedded — for architects and spa/pool builders who design their own basin.

How it's made

Engineered like a yacht.

Built by Rocean.

Every unit is designed, engineered, and assembled in-house. Hull, thermal systems, electronics, software — one team, one standard, from drawing board to delivery.

01

Naval architects, engineers, and composite specialists under one roof. Every curve, every system, every line of code — ours.

02

Marine-grade composite, structural foam core, seamless monocoque shell. UV- and weather-resistant. 10-year warranty.

03

We engineer and assemble our own thermal and filtration systems — not rebadged industrial units. 100% built in our European workshops.

Rocean manufacturing

Zero staff.
Zero downtime.
Zero compliance risk.

Rocean OS runs the bath so you don't. Water quality, hardware health: one system, fully autonomous.

01Water renewal, drain, refill, filter cleaning — fully automated.
02Predictive diagnostics catch issues before they become failures.
03pH, chlorine, skimmer, water turnover — water quality stays within public health standards.
What this replaces

14 staff-hours / week0.

No daily checks. No calling maintenance. The OS runs itself, reports to us 24/7.


Your body. Your data.

Your protocol.

Most people guess. Time. Duration. Temperature.

Rocean AI reads your sleep and recovery from your wearable to guide your cold plunge sessions — when to go in, how long, at what temperature. The more you use it, the smarter it gets.

Based on your sessions
Where your body responds best.

Based on your sessions, these are your best windows for stronger HRV (heart rate variability).

WEAKER
STRONGER
11°
14°
06h
09h
12h
15h
18h
21h
Rocean AI recommends
11:45
at 8°C · 3 minutes

Based on your sleep last night and your training load. Your body responds best at moderate cold, late morning.

LAST NIGHT · APPLE WATCH
Sleep
7h 42m
Good
HRV · RESTING
Recovery
51ms
+9ms vs yesterday
ROCEAN AI
Good sleep, HRV trending up. A late morning cold plunge at 8°C will maximize your recovery response without overloading your nervous system.
After 12 sessions
Measured changes with Rocean AI.

What actually happened — measured every morning by your wearable, session by session.

Sleep score
7-day avg
78
92
HRV baseline
resting, overnight
42ms
51ms
Resting heart rate
morning
64
58

Direct contact

Tell us
about your
project

A yacht, a residence, a flagship hotel — every installation begins here. We respond within 24 hours with the right person from our team.

We do not sell through distributors. All inquiries are handled directly.

Reach out :
info@rocean.fr

I am inquiring for

All inquiries are handled
by our team directly.

Thank you.

We will be in touch within 24 hours.