ESSE

INSTANT SOUND SIGNALS

AT THE TOUCH OF A BUTTON

Automated | Portable | Electronic​

Technical Specifications

130 dB Output

Delivers a powerful, focused directional sound that ensures your vessel is clearly heard in all conditions.

IP67 Standards

Engineered to operate in harsh marine conditions, providing dependable performance whatever the weather.

USB-C Rechargeable

Provides up to six hours of continuous signalling and can be easily recharged from any standard USB-C charger, onboard or ashore.

Lightweight Portable Design

Compact and convenient for small vessels — easily stowed below when not in use, with no complex wiring or installation required.

Patent Pending. Design and functionality protected under application.

Flexible Signal Modes

eSSe is designed to be simple, intuitive, and compliant in every situation.

From the function control panel, you can select an operating mode appropriate to the situation – signal once your intention to manoeuvre or signal  repeatedly in restricted visibility.

Signal Control Made Simple

eSSe takes the work out of marine sound signalling, giving you instant access to every required signal in a clear, intuitive way

  • Clear Compliance

    Pre-programmed with all required sound signals, so you’re always operating to regulation.

  • Organised for Simplicity

    Signals are grouped together for quick access: Manoeuvring (Rule 34) on the upper sector, and Restricted Visibility (Rule 35) on the lower sector.

  • Intuitive Dial Control

    Select the situation with a simple turn of the dial - eSSe delivers the prescribed signal instantly.

Designed For Every Situation

From crowded harbours to poor visibility and in emergencies, eSSe ensures your signal is always heard.

BUSY HARBOURS

Manoeuvre with confidence in crowded areas

In busy marinas and shipping lanes, use eSSe to clearly signal your intentions prior to manoeuvres.

POOR VISIBILITY

CONTINUOUS SIGNALLING WHEN YOU NEED IT

Whether in fog, heavy mist, or night-time, eSSe ensures that you can be heard by other vessels on watch.

EMERGENCIES

ACTIVATE INSTANTLY WHEN SECONDS MATTER

In urgent situations, eSSe delivers powerful, compliant signals at the touch of a button.

Secure Mounting Cradle

Safe & secure for hands free operation.

1

Locking Pull Pin

Confidence in challenging conditions
A sprung locating pin locks eSSe firmly in place, adding an extra layer of safety.

2

Geared Rotation Mechanism

Convenient Positioning
Pull, rotate, and release to set the device exactly where you need it. The sprung gear ensures a secure orientation every time.

3

Bolted Clamp

Permanent stability
A robust clamp fixes securely to a spare rail, providing a solid marine-grade base that keeps eSSe reliably mounted and instantly accessible.

Recharge with Ease

eSSe keeps you signalling with confidence for longer

The internal rechargeable batteries deliver up to six hours of continuous operation, ensuring dependable performance even during extended periods at sea. When it’s time to recharge, simply plug into any available USB-C charger -quick, easy, and compatible with standard power sources onboard or ashore. No gas canisters, no batteries to replace — just effortless reliability, time after time.

Frequently Asked Questions

Everything you need to know about eSSe - from performance to compliance.

How loud is eSSe and what is its range?

eSSe produces 130dB of sound at 400Hz & the audible range is 0.5 miles.

How long does the battery last on a single charge?

eSSe provides 6 hours of continuous signalling (based on Sailing in Restricted visibility).

Is eSSe waterproof and suitable for marine conditions?

eSSe has an IP 67 Rating – which is suitable for marine use offering protection against both dust and temporary submersion in water (up to 1 meter for 30 minutes).

Does eSSe meet international maritime safety standards?

eSSe is compliant with Part D of the International Regulations for the Prevention of Collisions at Sea (IRPCS).

All 16 signals prescribed by rules 32 to 37 are pre-programmed into the signal control.

The output sound is compliant with Annex iii.

How do I recharge eSSe?

eSSe is recharged via an ingress protected (IP) USB-C port for charging the internal batteries. 

Any USB charger can be used from mains 240v, on-board 12v batteries or even a power bank.

Can eSSe replace an air horn style whistle?

Yes. eSSe is fully compliant with IRPCS requirements.

Superior to a manually operated air horn, with pre-programmed signals, automation, and rechargeable battery power.

With its compact and self-contained design, its ideal for use on small vessels.

JOIN THE PRIORITY CLUB

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Be the first to experience eSSe — the automated, portable, electronic sound signalling device designed for small vessels.

You will receive exclusive updates, priority access to pre-orders, and a chance to be part of the next step in marine safety innovation.