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TPC Formula

A ship 128 meters long has a maximum beam of 20 meters at the waterline and coefficient of fineness of 0.85. Calculate the TPC at this draft.

Gicen:

Block coefficient = 0.85
     Ship's lenght = 128 m
             Breadth = 20 m

What is asked?

Calculate for the tonnes per centimeter  immersion (TPC).

Solution:

This is the TPC formula:

TPC = Lenght × Breadth × Block coefficient × Seawater density
                                             100
TPC = 128 × 20 × 0.85 × 1.025
                            100
TPC = 22.3 tonnes




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7 comments:

  1. UnknownMay 3, 2015 at 8:14 PM

    Sir can you help me this question. Vsl TPC of 17.62 tonnes in salt water. What would be her TPC in water density 1.016 t/m3?

    ReplyDelete
    Replies
    1. NautaMay 4, 2015 at 9:43 PM

      Just now encounter this kind of problem. I tried to solve it, but will you please let us know first the answer according to your material?




















































































































      Delete
    2. benjie mark balangyaoSeptember 14, 2016 at 2:56 PM

      The density 1.o16 is between the density of sw and fw, so it's considered as dw(dock water).
      I used an alternative formula to get the the DW TPC.

      DW TPC = (SW TPC x density of DW) ÷ density of SW
      = (17.62 x 1.016) ÷ 1.025
      DW TPC = 17.47 tonnes

      Delete
  2. UnknownOctober 17, 2015 at 9:30 PM

    it will be 17.46t/cm

    ReplyDelete
  3. JohnreyJanuary 6, 2017 at 3:29 PM

    correct!

    ReplyDelete
  4. UnknownAugust 7, 2018 at 12:02 PM

    I thought TPC is only found in a Hydrostatic Table

    ReplyDelete
  5. AnonymousJune 16, 2022 at 5:42 PM

    How to find exact cargo quantity to be loaded having the TPC (and all vssl particulars)?

    and also how to find a freeboard after loaded of exact quantity of cargo?

    ReplyDelete