Fishing Vessel Stability and the E-Simulator Project

Jack GreenhamDip.N.S,FM1,ON1,BMS

Marine Institute

Alarming Statistics

“…the fatality rate on fishing vessels [in Canada] between 15 and 150 tonne (classed as small fishing vessels) is 32 per 100,000 fishers per year”

NL Tragedies

•NL Statistics:• 1999 until 2008 ….32 fatalities

•Many attributed to stability issues

Introduction to Basic Stability Principles

Basic stability concepts as it applies to fishing vessels – Practical application --

Buoyancy, Gravity and GZ

Lightship Curve

Weight Creep

Improper Ballasting

Port Departure Condition

Arrival at Grounds – 75% Consumables

Catch on Deck and Towing

Gear Hooked Bottom

E – Simulator Demo Video

E – Simulator Program

• Interactive features• Multimedia - DVD and

web based • Promote awareness and

understanding• Realistic experience in

safe learning environment

E – Simulator Program

• Program in Modular format• Introduction/Orientation • Module I: Why the Vessel Floats: Basic Concepts• Module II: Vessel Behaviour: Core Concepts• Module III: Seamanship and Stability and

Stability: Operating Safely• Module IV: Keeping Stable: How Changes to the

Vessel Affect Stability• Module V: Ensuring a Stable Vessel:

Construction and Regulation• Module VI: Managing Stability: Stability Booklet

and Conditions of Load

E – Simulator Program

Introduction:• Overview of importance of stability• Look at some statistics• Examples of accidents and consequences• Introduction on how to use simulator

– How to manipulate on screen objects– Pull down menus & downloadable documents– Help features and technical assistance

E – Simulator Program

Module I:• Centres of Gravity and Buoyancy• Metacentre• GZ lever• Equilibrium• Stiff and tender ships

E – Simulator Program

Module II:•Righting Energy Curves•Down Flooding•Reserve buoyancy•Freeboard•Free Surface Effect•Related concepts

E – Simulator Program

Module III:• High Points of Suspension- Fishing Gear• Catch Handling and Stowage• Anti Roll Devices• Vessel Design Factors• Icing

E – Simulator Program

Module IV:•The inclining experiment•Advanced stability concepts•Longitudinal Stability•Vessel Modifications

E – Simulator Program

Module V:• Interpreting stability data supplied to fishing

vessels – stability booklets• Stab 4 Criteria

E – Simulator Program

Module VI:• Interactive 3D stability

model of users ‘own’ vessel– Still only a simulation

• Explore how changes and modifications will affect stability

Investment in the Future

Thank you

Questions???

Contact Information778-0441

jack.greenham@mi.mun.ca