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Securely store certificates and documents, track renewals and maintenance, and never miss an expiry — plus a free power assessment whenever you need one.
Your whole boat, organised in one place
More than an electrical calculator — the Boat Vault is a complete digital record for every Norfolk Broads boat owner. Keep your documents, renewals and maintenance history safe and to hand.
Documents & certificates
Store your BSS, insurance, Broads toll, gas safety, registration and survey — all in one secure place, ready whenever you need them.
Renewal reminders
Never miss an expiry again. We email you before your certificates and tolls are due, with 🟢/🟠/🔴 status at a glance.
Maintenance & costs
Log antifouling, engine services and anodes with next-due tracking — and see your true cost of ownership over time.
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See What We Did for Opal
North Broads · 44ft Bounty
Opal – Electrical Upgrade Summary
Opal started as a typical Norfolk Broads cruiser with a basic setup — AGM batteries, limited usable power, and an older inverter system. It worked, but required constant management, especially when off-grid, and struggled to run higher-powered appliances.
The upgrade transformed the boat into a modern, fully capable electrical system. The old batteries were replaced with a large 2300Ah lithium bank, supported by a full Victron system including a MultiPlus inverter/charger, Cerbo GX monitoring, solar charging, and multiple DC-DC chargers from the alternators.
Solar was upgraded and properly integrated, wiring and protection were rebuilt, and all systems were brought under one intelligent control setup. The result is a system that charges faster, runs more efficiently, and gives full visibility of what’s happening onboard.
Today, Opal can comfortably run modern appliances, stay off-grid for longer periods, and requires far less day-to-day management — turning it from a “power-limited” boat into one that simply works.
❌ Before — The old system
- •AGM batteries with limited usable capacity
- •Required constant energy management off-grid
- •Could not reliably run high-demand appliances
- •Limited system visibility and monitoring
- •Slower charging from alternator and shore power
✅ After — The transformed system
- ✓2300Ah lithium batteries
- ✓720W solar — 1,377 Wh generated daily
- ✓Victron MultiPlus-II 5000W inverter
- ✓Shore power charging at 220amps
- ✓Alternators charging at 90amps
- ✓High power appliances supported including air fryer & kettle
- ✓7+ days off-grid without shore power
- ✓Full remote monitoring via Victron VRM
- ✓Remote heating control and CCTV
About Us
Norfolk Broads electrical specialists
We specialise exclusively in marine electrical systems for Norfolk Broads boats. From single battery upgrades to complete system rebuilds, we've worked on cruisers, hire boats and liveaboards across the network.
We only fit equipment we'd install on our own boats — Victron, Fogstar, Renogy — and we give you the full picture before you spend a penny.
Is your boat like Opal before the upgrade?
These are the warning signs that your electrical system is holding you back. Tick the ones that apply.
How It Works
Three steps to a boat that never runs out of power
Tell us about your boat
Answer a few questions about your boat, what you use on board, and how long you cruise between charges. Takes 3 minutes. No technical knowledge needed.
Get your power assessment
We calculate your exact daily consumption, battery autonomy, and solar potential. You see precisely what your boat needs — and what happens if you add or change anything.
Get your parts or a full install
Buy the parts you need to fit yourself, or request a fixed-price quote and we supply and install everything professionally at your marina.
Calculate your boat's exact power needs
Answer a few questions about your boat and we'll instantly show you your daily power consumption, battery autonomy, and the exact upgrades you need.
Tell us about your boat
Type, size, current system and what you run on board.
Get instant calculations
Daily Wh consumption, battery days, solar potential.
Request a fixed quote
Choose your upgrades and we supply & fit at your marina.
🔒 No obligation · ⚓ Broads specialists