Guesses on hull speed? 21' Unknown Design

Discussion in 'Powerboats' started by ReddOne, Mar 4, 2023.

  1. ReddOne
    Joined: Mar 2023
    Posts: 3
    Likes: 1, Points: 3
    Location: WA

    ReddOne New Member

    21' hull of unknown design. Powered by 60hp Isuzu I/O. Any guesses on what kind of cruising speed this design might have? Larri Rae.jpeg
     
  2. bajansailor
    Joined: Oct 2007
    Posts: 3,649
    Likes: 1,593, Points: 113, Legacy Rep: 37
    Location: Barbados

    bajansailor Marine Surveyor

    Welcome to the Forum Redd.
    This wee boat looks very nice - are you looking to buy her?
    If you are, will you be using her for fishing, and / or maybe hauling pots with that derrick?
    If you had her fishing, what is the minimum (but realistic) cruising speed you would require?
    Can you post some more photos of her, including a view from the stern or aft quarter if possible?
    Is she of timber / plywood construction?
     
    Last edited: Mar 5, 2023
    BlueBell likes this.
  3. ReddOne
    Joined: Mar 2023
    Posts: 3
    Likes: 1, Points: 3
    Location: WA

    ReddOne New Member

    Starting a small marine services company (diving, surveys, etc) and looking for a small workboat. Would like somewhere in the 12-15kn range. Plywood construction. Larri Rae stern.jpeg
     
    bajansailor likes this.
  4. BlueBell
    Joined: May 2017
    Posts: 2,731
    Likes: 989, Points: 113
    Location: Victoria BC Canada

    BlueBell . . . _ _ _ . . . _ _ _

    Howdy neighbour!
    To answer your question:
    Hull speed is about 6-knots.
    It would probably do close to that with just the kicker.
    I'm not sure it would get up and plane with 60HP, it would depend a lot on how heavy it is and how fresh those 60HP's are...
    Can't you take it for a test drive?
     
    bajansailor likes this.
  5. gonzo
    Joined: Aug 2002
    Posts: 16,877
    Likes: 1,758, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    For dive and survey work, push knees at the bow are a necessity. You can add them on.
     
  6. kapnD
    Joined: Jan 2003
    Posts: 1,315
    Likes: 418, Points: 83, Legacy Rep: 40
    Location: hawaii, usa

    kapnD Senior Member

    That looks much like a Toll,an skiff, which is a tough little boat.
     

  7. ReddOne
    Joined: Mar 2023
    Posts: 3
    Likes: 1, Points: 3
    Location: WA

    ReddOne New Member

    Owner is currently on a road trip so hopefully I can take her for a test in mid-April.
    Push knees? Hmmm, interesting thought!
    I looked up Tolman Skiff and that sure does look similar! Best guess that Ive heard! Thanks!
     
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.