The Minimum Manoeuvering Range as a Criterion to Evaluate the Risk of Collision Between Ships

  • Bernd Hampel
Conference paper

Abstract

To evaluate the risk of collision between two ships in a hazardous encounter, it is necessary to establish a criterion which quantifies the danger for the involved ships.

For this purpose the Minimum Maneuvering Range seems to be a suitable parameter. It describes the minimum distance from the other ship, which one ships needs to avoid a collision, when starting her evasive maneuver. To calculate the Minimum Maneuvering Range and the corresponding evasive maneuver the

  • actual maneuverability of the own ship and

  • possible maneuvers of the other ship have to be taken into account.

Two methods to solve this problem are considered.

The results for several encounters of two ships with variable rudder application are computed. A simple and definite representation of the necessary maneuvering range and actions on the radar display is suggested.

Keywords

Differential Game Speed Ratio Maneuver Zone Evasive Maneuver Ship Maneuverability 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Nomenclature

Abbreviations

A

Another ship

CPA

Closet point of approach

H

Hull

IRPCS

International Regulations for Preventing Collisions at Sea

MMR

Minimum Manuevering Range

MR

Manuevering Range

MPD

Minimum Passing Distance

O

Own Ship

P

Propeller

R

Ruddler

S

Seaway (e.g. wind, waves. shallow water, etc)

Symbols

f

Vector function

Iz

Moment of inertia about z-axis

j

Index

m

Mass

N

Moment about z-axis

r

Range

W

Value function

X,Y

Forces along x-, y-axes

x

Nondimensional coordinate

xG

Coordinate of center of gravity

u, v

Velocity component along x-, y-axes

ψ

Heading angle

φO, φA

Control variable

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References

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Copyright information

© Springer-Verlag Berlin · Heidelberg 1985

Authors and Affiliations

  • Bernd Hampel
    • 1
  1. 1.Institut für SchiffbauUniversität HamburgDeutschland

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