Propeller dia and shaft rpm

Discussion in 'Propulsion' started by mtht110, Dec 17, 2016.

  1. mtht110
    Joined: Jun 2011
    Posts: 25
    Likes: 0, Points: 1, Legacy Rep: 10
    Location: Bangladesh

    mtht110 Junior Member

    We are building a Pusher Tug. It’s LOA=20.5m, B=7m, D=3.2, T=2.47m, M/E power=600x2 HP, M/E rpm=900, Hull resistance=165 KN, Speed=14 kt, Bollard pull=13T.
    How can I calculate the required propeller dia and shaft rpm? :confused:
     
    mtht110, Dec 17, 2016
    #1
  2. Ad Hoc
    Joined: Oct 2008
    Posts: 7,788
    Likes: 1,688, Points: 113, Legacy Rep: 2488
    Location: Japan

    Ad Hoc Naval Architect

    By using standard Bp-Delta charts
     
    Ad Hoc, Dec 17, 2016
    #2
  3. mtht110
    Joined: Jun 2011
    Posts: 25
    Likes: 0, Points: 1, Legacy Rep: 10
    Location: Bangladesh

    mtht110 Junior Member

    How can I? Plz explain.:confused:
     
    mtht110, Dec 17, 2016
    #3
  4. Ad Hoc
    Joined: Oct 2008
    Posts: 7,788
    Likes: 1,688, Points: 113, Legacy Rep: 2488
    Location: Japan

    Ad Hoc Naval Architect

    See here for details
     
    Ad Hoc, Dec 17, 2016
    #4

  6. Trojan
    Joined: Dec 2016
    Posts: 3
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Huntington Harbor California

    Trojan New Member

    Hello, My question is what size propellers should I have in a 1979 28 foot Trojan flybridge it has two 318 Chrysler's in it. I am now running 14x14x1 cuped, at 4200 rpm the boat is slow an the gas mileage is bad, can anyone help.
     
    Trojan, Dec 22, 2016
    #5
Loading...
Similar Threads
  1. QUICKNAVAL

    Propeller shaft and propeller diameter

    QUICKNAVAL, Mar 19, 2014, in forum: Propulsion
    Replies:
    6
    Views:
    15,395
    QUICKNAVAL
    Mar 22, 2014
  2. valter.f

    Twin stern tube propeller with only one engine

    valter.f, May 24, 2023, in forum: Propulsion
    Replies:
    15
    Views:
    2,256
    valter.f
    Jun 1, 2023
  3. Ruffner Sedurifa

    Propeller Puller

    Ruffner Sedurifa, Mar 29, 2022, in forum: Propulsion
    Replies:
    10
    Views:
    1,493
    Ruffner Sedurifa
    Apr 3, 2022
  4. marufuddin0

    3D Propeller Design

    marufuddin0, Dec 13, 2020, in forum: Propulsion
    Replies:
    7
    Views:
    3,069
    Heimfried
    Dec 21, 2020
  5. Bharat Kandpal

    Calculations for designing a propeller?

    Bharat Kandpal, May 1, 2020, in forum: Propulsion
    Replies:
    5
    Views:
    1,931
    gonzo
    May 10, 2020
  6. Barry

    New Propeller Design

    Barry, Apr 2, 2020, in forum: Propulsion
    Replies:
    6
    Views:
    2,709
    Barry
    Apr 3, 2020
  7. 91SARATH

    Propeller design

    91SARATH, Dec 14, 2017, in forum: Propulsion
    Replies:
    27
    Views:
    7,025
    gonzo
    Dec 19, 2017
  8. Angle X

    Rim drive propeller? Shaft driven rim drive?

    Angle X, Dec 31, 2016, in forum: Propulsion
    Replies:
    0
    Views:
    2,856
    Angle X
    Dec 31, 2016
  9. Edolyi

    Propulsive efficiency and propeller depth relationship

    Edolyi, Jul 25, 2015, in forum: Propulsion
    Replies:
    9
    Views:
    5,677
    Edolyi
    Jul 26, 2015
  10. mlopez0519

    Propeller Hub question

    mlopez0519, Mar 22, 2015, in forum: Propulsion
    Replies:
    7
    Views:
    2,920
    mlopez0519
    Mar 23, 2015
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.