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Ship-to-Ship (STS) Interaction Hydrodynamic Suction Force & Yaw Moment Calculator

Easily calculate and compute ship-to-ship (sts) interaction hydrodynamic suction force & yaw moment calculator with accurate equations, live formulas, and expert guidance.

Length between perpendiculars of the passing vessel.

Beam width of primary vessel.

Draft of vessel.

Centerline-to-centerline or hull-to-hull lateral separation distance.

Speed through water in knots.

Under-keel water depth.

Calculated Result
4,523.1 kN

Lateral Suction Force

Lateral Suction Force

4,523.1 kN

Suction Force K N

4523.1

Yawing Moment K Nm

126647.4

Rudder Counter Steer Deg

30.4

Depth To Draft Ratio

1.64

4,523.1 — kN

Calculation Breakdown

  1. Applied FormulaEstimates Bernoulli suction attraction force and yawing moments between vessels during replenishment at sea (RAS) or close-quarters canal overtaking.F_y = \frac{1}{2}\rho v^2 L T C_y \left(\frac{B}{s_y}\right)^{1.8} f_h(h/T), \quad N_z \approx 0.14 L F_y

STS Hydrodynamic Interaction Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.01.1k2.3k3.4k4.5kLateral Suction Force

What Is the Ship-to-Ship (STS) Interaction Hydrodynamic Suction Force & Yaw Moment Calculator?

This tool computes ship-to-ship (sts) interaction hydrodynamic suction force & yaw moment calculator with high precision arithmetic.

How Does the Ship-to-Ship (STS) Interaction Hydrodynamic Suction Force & Yaw Moment Calculator Work?

Estimates Bernoulli suction attraction force and yawing moments between vessels during replenishment at sea (RAS) or close-quarters canal overtaking.

Ship-to-Ship (STS) Interaction Hydrodynamic Suction Force & Yaw Moment Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

Fy=12ρv2LTCy(Bsy)1.8fh(h/T),Nz≈0.14LFyF_y = \frac{1}{2}\rho v^2 L T C_y \left(\frac{B}{s_y}\right)^{1.8} f_h(h/T), \quad N_z \approx 0.14 L F_y

Estimates Bernoulli suction attraction force and yawing moments between vessels during replenishment at sea (RAS) or close-quarters canal overtaking.

How to Use the Ship-to-Ship (STS) Interaction Hydrodynamic Suction Force & Yaw Moment Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Ship-to-Ship (STS) Interaction Hydrodynamic Suction Force & Yaw Moment Calculator Example

Input Values:

shipLengthM:200
shipBeamM:32
shipDraftM:11
lateralSeparationM:45
vesselSpeedKnots:10
waterDepthM:18
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required kN.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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