Marine Engineering

Cargo Vessel Propulsion Power Estimation (ITTC 1978 Method) Calculator

Cargo Vessel Propulsion Power Estimation (ITTC 1978 Method) engineering calculator.

Quick Answer

Calculate Cargo Vessel Propulsion Power Estimation (ITTC 1978 Method)

Calculator

Propulsion power (W)
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Result Interpretation

Cargo Vessel Propulsion Power Estimation (ITTC 1978 Method) Calculator computes Propulsion power in W using the defined engineering formula and the input values provided.

Worked Example

Verified calculation

Given:

  • Ship speed = 7.168
  • Total resistance = 320000
  • Propulsion efficiency = 0.72

Expected Result:

  • Propulsion power = 3185777.7777778

Engineering Interpretation:

Under the given input conditions, the calculated result is: Propulsion power = 3185777.7777778 W.

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.

Formula / Method

propulsion power = (total resistance * ship speed) / propulsion efficiency

Formula family: formula_marine_propulsion_power_estimation_engine_cargo_vessel_mode

Variables

SymbolLabelRoleDescription
R_tot Total resistance INPUT Total resistance
v_s Ship speed INPUT Ship speed
eta_propulsion Propulsion efficiency INPUT Propulsion efficiency
propulsion_power Propulsion power OUTPUT Propulsion power

Calculation Steps

  1. Enter the total resistance in N.
  2. Enter the ship speed in m/s.
  3. Enter the propulsion efficiency in 1.
  4. Step 1: Compute propulsion power.
  5. Read the propulsion power (W) from the results.

Engineering Summary

Calculate Cargo Vessel Propulsion Power Estimation (ITTC 1978 Method)

Frequently Asked Questions

What does this calculator calculate?

The Cargo Vessel Propulsion Power Estimation (ITTC 1978 Method) Calculator estimates Propulsion power based on the input parameters you provide

Why is total resistance important in this calculation?

total resistance is directly proportional to propulsion power. When you enter total resistance in N, the calculator uses it in the engineering formula to compute the output

How should I interpret the result propulsion power?

The calculator outputs propulsion power in W. For larger power values, divide by 1000 to express the result in kW, or by 745.7 for horsepower. The result is computed directly from the input values using the defined engineering formula

What units should I use for the inputs?

Enter each value in the units shown next to the input field: Total resistance (N), Ship speed (m/s). Make sure all inputs use the specified units for consistent results

What assumptions does this calculator use?

This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment

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