27E Nimbus

Discussion in 'Hybrid' started by Mariner 31, Dec 14, 2011.

  1. Mariner 31
    Joined: Dec 2010
    Posts: 6
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Sydney Australia

    Mariner 31 Junior Member

    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.
     
  2. kerosene
    Joined: Jul 2006
    Posts: 1,210
    Likes: 153, Points: 63, Legacy Rep: 358
    Location: finland

    kerosene Senior Member

    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.
     
  3. kerosene
    Joined: Jul 2006
    Posts: 1,210
    Likes: 153, Points: 63, Legacy Rep: 358
    Location: finland

    kerosene Senior Member

    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.
     
  4. liki
    Joined: Nov 2008
    Posts: 220
    Likes: 12, Points: 18, Legacy Rep: 114
    Location: Finland

    liki Senior Member

    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.
     

  5. kerosene
    Joined: Jul 2006
    Posts: 1,210
    Likes: 153, Points: 63, Legacy Rep: 358
    Location: finland

    kerosene Senior Member

    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?
     
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.