Terence

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  • in reply to: Show me your ships! #38974
    Terence
    Participant

    11.95m LOA 3.3T displ
    delft1195DSSH30.jpg

    in reply to: *fbm file for FreeShip #38972
    Terence
    Participant

    I am running Delftship Professional v9.20
    I have tried saving as a part and exporting to FreeShip 2.6 and FreeShip plus but without success. Nor am I able to save my Delftship model into FreeShip.
    My purpose is to utilise the Freeship cross curve function.

    Any suggestions anybody?

    in reply to: Show me your ships! #38634
    Terence
    Participant

    using 3 lines as suggested

    in reply to: Show me your ships! #38633
    Terence
    Participant

    11Mchineunderhungrudderreversetransom7h15.jpg
    using 3 as suggested

    in reply to: Show me your ships! #38631
    Terence
    Participant

    11Mchineunderhungrudderreversetransom6h15.jpg

    in reply to: Show me your ships! #38626
    Terence
    Participant

    1) I will post some more as you suggest 100Kb max
    2) The book is available in PDF free online , message me direct and I’ll send you the link or a copy
    3) Chines are easier to build in my opinion, having a hard chine at the waterline sneaks a little more water line beam without much extra displacement and so increases righting moment. It is planing and surfing where I am concerned, Eliasson and Larsson refer to chines and planing strakes as a way avoiding increased wetted area by deflecting and disattaching the flow creeping up the hull sides in high speed conditions. A hard chine also seems to give directional stability at high speed.
    4) I have been looking at the Vendee Callengers and Class 40s and aft chines may well be the way to go, just I havent mastered the transition on the software without getting an ugly bulge in the middle of the boat.

    in reply to: Show me your ships! #38624
    Terence
    Participant

    the picture fell off 🙁

    in reply to: Show me your ships! #38623
    Terence
    Participant

    Suggestions welcome especially regarding stability calculations and VPP. I would also be interested in thoughts on merits of hard chine or soft chine especially down wind in planing conditions. I believe this boat will full plane in 20kts tws or less. with 160 m2 sail area.

    in reply to: Show me your ships! #38622
    Terence
    Participant

    been playing around with FreeShip for a couple of years and read up on Larsson and Eliasson Elements of Yacht Design plus a whole lot of stuff on the net.
    I have a sailed for many years and built 2 boats.
    This is my idea for a budget fast short handed 11m performance yacht using medium tech materials.
    displacement is just under 3T in light ship mode.
    The chines are at the 15 deg waterline for stability and ease of steering especially down wind under auto pilot as well as simplifying
    construction.
    the prismatic coefficient is high at .64
    with a sail area to displacement of around 35 and a displacement to waterline length of 70 she should still go in the light
    mast is alloy, sail plan is a self tacking jib backed up with a code 0 for the light and a roachy main, assymetric spinnaker downwind

    ballast ratio of 55% in a bulb with 2.3m draft will make for a stiff yacht with strong upwind performance

    other dimensions are
    LOA 11 m
    BMAX 3.3m
    LWL 10.5 m
    Bwl 2.2m

    RM1deg 125 KgM

    in reply to: Show me your ships! #38616
    Terence
    Participant

    current project

Viewing 10 posts - 1 through 10 (of 10 total)