27E Nimbus

[Mariner 31]

The other day I stumbled across a Boat from a company called Nimbus.

They state it's an all electric boat capable of 25 Knots and that the batteries are good for 3000 recharges.

Does anyone know anything about it.

[kerosene]

I am sure you have seen the company website.

quoting here to make it easier for others:

The 27 Nova S is a standard production boat, neither deck nor hull have been specially prepared or lightened in any way. In other words, the electric-powered engine we have installed has been given a really tough job. The power unit and the battery cells come from Electroengine. The transmission is a DPH duoprop drive from Volvo Penta.

This boat has a cruising speed of approximately 23 knots and a top speed of 27 knots. At cruising speed the boat has a range of 20 nautical miles. We will be able to present versions with longer range when the boat is launched onto the market. The craft is charged from a standard 230V/16Ah power-point. Charging takes 28 hours. When using a standard 3-phase 400V/32Ah power-point, full charging takes approximately 4 hours.

[kerosene]

3 phase 400V plug is not THAT standard and 4 hours of that is hefty load. for 20 mile cruise... math doesn't quite add up to be a feasible (marketable) boat imo.

[liki]

28 hours of 16A * 230V could produce a bit over 100kWh, which could be enough for 20nm with a boat of that size at 23kn. The battery bank required to store that amount of energy in a weight allowed for a planing boat will not be cheap.

[kerosene]

yeah the investment in electric powertrain makes mostly sense in a system that gets regularly (as in every day) used 50-70% of its capacity. In this kind of systems the economical factors can make sense. Unlikely to be the case on a boat. 100k $/eur battery bank buys a lot of diesel.

How many boat get used even 50 times/year?