Solar Power and Scale Factor

Discussion in 'Boat Design' started by alan craig, Jan 25, 2017.

  1. Rurudyne
    Joined: Mar 2014
    Posts: 1,170
    Likes: 40, Points: 48, Legacy Rep: 155
    Location: North Texas

    Rurudyne Senior Member

    Savannah forever!
  2. alan craig
    Joined: Jul 2012
    Posts: 274
    Likes: 52, Points: 38, Legacy Rep: 14
    Location: s.e. england

    alan craig Senior Member

    I had no idea what TEU stood for in DennisRB's graph so I googled:
    Twenty foot Equivalent Units.
    It's not really a mass, it's basically the footprint of a twenty foot container.

    The total displacement of the 70,000DWT vessel is about 92,000(cubic metres).

    Also found a publication by MAN diesel about ship propulsion, didn't read all but it states that 70% to 90% of a slow container ship drag can be due to skin friction.

  3. Stumble
    Joined: Oct 2008
    Posts: 1,896
    Likes: 71, Points: 48, Legacy Rep: 739
    Location: New Orleans

    Stumble Senior Member

    In the graph the tonnage is DWT, which is the mass of cargo the ship can carry (it is the ships max displacement minus the weight of the ship). So a 70,000dwt ship can be loaded with 70,000 tons of cargo. TEU is a volume measure of how many containers can fit on the deck.
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.