SWATH speed and stability opinions

Discussion in 'Boat Design' started by jon haig, Jul 25, 2019.

  1. BlueBell
    Joined: May 2017
    Posts: 707
    Likes: 70, Points: 28
    Location: Victoria BC Canada

    BlueBell Ahhhhh...

    John,
    I believe the correct term for what you are attempting to describe is transfer.
    If you're going to be a know-it-all, it's important to be correct, otherwise...
    well, it just looks bad.
     

  2. jehardiman
    Joined: Aug 2004
    Posts: 2,436
    Likes: 187, Points: 63, Legacy Rep: 2040
    Location: Port Orchard, Washington, USA

    jehardiman Senior Member

    ??? We were not talking about the actual geometry of the turn (i.e. the advance, transfer, and tactical diameter) but rather the orientation of the ship to its course over ground. Yellowjacket used the aerodynamic term "slip" Slip (aerodynamics) - Wikipedia https://en.wikipedia.org/wiki/Slip_(aerodynamics) for the orientation of the hull to the track while in a turn. A ship does not "slip", it "skids" Skid (aerodynamics) - Wikipedia https://en.wikipedia.org/wiki/Skid_(aerodynamics) because the rudder is always outside the CG during the turn for SWATHs and all other vessels except fully flying hydrofoils.
     
Loading...
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.