What temperature range does the Rocean Bath reach?

The Rocean Bath and Box both reach temperatures from 3°C to 40°C — functioning as a cold plunge, cold bath, or hot bath. Cooling rate is approximately −4°C per hour.

Is the Rocean bath suitable for hotels and spas?

Yes. Rocean products are specifically designed for professional environments requiring zero daily staff input. Rocean OS autonomously manages water chemistry, filtration, UV treatment, and temperature. Deployed in five-star hotels, premium gyms, superyachts, and UHNW residences worldwide.

What is a contrast bath?

A contrast bath alternates immersion between hot water (up to 40°C) and cold water (as low as 3°C). The thermal contrast stimulates circulation, accelerates muscle recovery, and has measurable effects on HRV and sleep quality. Rocean designs autonomous contrast bath systems for professional and residential use.

Can Rocean supply a system only for a custom basin?

Yes. Rocean supplies its intelligent technology — thermal unit, Rocean OS, filtration system — as a standalone system for architects and spa builders who design their own basin. Available for bespoke projects worldwide.

Where is Rocean manufactured?

All Rocean products are designed, engineered, and assembled in Bordeaux, France, and at a European shipyard using naval composite techniques. No rebadged industrial components — every system is built in-house.

The Architectureof Contrast

Autonomous contrast baths. Hot, Cold. Crafted with world-class materials.

Our Clients

95m Superyacht

Royal Dutch Shipyards

Formula 1

Driver

French National Opera

Ballet Dancers

French Elite Army

Paratroopers

Jean Bouin Stadium

Premium Gym — Paris

Michel Reybier

Ultra-Luxury Hospitality

Monaco Mareterra

Ultra-Luxury Penthouse

Ibiza

Ultra-Luxury Villa

Brach Paris

5-Star Hotel

ROCEAN 2026

The Offer

RoceanBox

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

RoceanBath

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

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

Insulation±2°C/day variation. No condensation.

Cooling unitVariable output compressor: 0.5 to 3 HP.

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.

Warranty2 years on systems — 10 years on composite shell.

Available in standard or fully bespoke execution.

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.

System & Technology

Cooling unitVariable output compressor: 0.5 to 3 HP.

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.

Warranty2 years on systems — 10 years on composite shell.

Available in standard or fully bespoke execution.

Architectural Integration

Custom dimensions, materials, finishes. From technical brief to on-site commissioning — any footprint, any finish.

Systems Only

Full thermal and filtration system — chiller, pump, UV, sensors, Rocean OS — pre-assembled, ready to integrate into any basin. Technical documentation and commissioning included.

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.

Every curve, every surface, every proportion designed in-house. No outsourcing, no off-the-shelf parts.

Marine-grade fiberglass, structural PVC foam core. Seamless monocoque shell, zero joints, UV- and weather-resistant for life.

Thermal unit, filtration system, electronics, and software assembled entirely in our European workshops. Every component tested before it leaves the building.

ROCEAN INTELLIGENCEZero 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 / week~~ → 0.

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

Coming Soon

ROCEAN AI

Your body. Your data.
Your protocol.

Temperature control

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

2°

5°

8°

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.

Performance trend · 12 sessions

Your measurable recovery gains.

Morning wearable baselines, compared pre- and post-protocol, with consistent improvements across sleep, HRV and resting heart rate.

Sleep score

7-day avg

→

HRV baseline

resting, overnight

42ms

→

51ms

Resting heart rate

morning

→

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

Inquiry sent.

Thank you. We will be in touch within 24 hours at the email address you provided.

The Architectureof Contrast

Our Clients