EZ MOOR

AN EASY-TO-USE

SHIP MOORING LINE

COMPUTER PROGRAM

ANNOUNCEMENT
A new booklet is being prepared to help waterfront personnel understand and use EZ MOOR on a routine basis. The booklet will be entitled "MOORED - SHIP BOOKLET for WATERFRONT PERSONNEL". The booklet will be available in August 08'.

• Analyzes forces in mooring lines fastening large Naval and commercial ships alongside piers subjected to heavy weather from any direction.

• Calculates mooring line tension and factors-of-safety based on mooring line breaking strength.

• Calculates forces applied to pier fixtures and ship chocks.

• A six-degree-of-freedom math model is used, allowing ship movements and rotations in three-dimensional space─surge, sway, heave, roll, pitch and yaw.

• Accepts wind, water and tidal disturbances.

• Models mooring lines with multiple parts and user-specified elasticity.  Contains tabulated values of mooring line properties for steel and synthetic ropes.

• Provides representative values of hull and superstructure sail areas and wind and water forces.

• Fenders, camels, floats and other ship offsetting devices are taken into account.

• Contains an optimization routine which finds the optimum docking location of a ship alongside a pier.

• Requires less than one hour to input data and get results.

• The EZ MOOR USER MANUAL assists in preparing data and provides guidance in developing the mooring line network.  Examples of moorings of various vessels are included to guide the user.

• The EZ MOOR THEORETICAL MANUAL develops the mathematical foundation and provides insight into the physics of ship mooring.

• The EZ MOOR COMPACT DISK (CD) provides the computer program in the Microsoft EXCEL format.  Input data and output results are provided in a clear spreadsheet format.

• EZ MOOR applies to quasi-static environmental loading conditions as defined in the Navy Unified Facilities Criteria (UFC) document UFC-4-159-03, 3 October 2005, DESIGN:  MOORINGS, Types I and II mooring service types.

NOTICE: WHEN YOU PURCHASE A COPY OF EZMOOR YOU EFFECTIVELY PREPAY FOR CONSULTING SERVICES CONCERNING ITS APPLICATION AND INTERPRETATION OF STANDARD ITEMS OF NAVAL CONTRACT REQUIREMENTS. THERE IS NO TIME LIMIT WITH RESPECT TO THE ASSISTANCE I WILL PROVIDE. MY GOAL IS TO REMOVE THE BURDEN OF MOVING UP THE LEARNING CURVE.

EZ MOOR is designed and produced by
Dr. Donald C. Tolefson.

His ship mooring experience covers a 19-year period and involves multiple shipyards. He has converted his experience into an easy-to-use computer tool for both experts and non-experts. Plant visitations to teach the physics of ship mooring are part of the offering.

If you would like to see screen shots of the EZMOOR Spreadsheet and the results of the calculations, click here for a Flash file or click here for a PDF file.

For Seminar and Consulting Services, please click on the following highlighted subjects:

Seminar - learn the physics of moored ships and the network of mooring lines.

Consulting - on-site and internet calculations of mooring line forces for heavy weather plans.

Marine Engineering Services including failure analyses, equipment selection and engineering calculations are available utilizing the services of the website owner (Dr. D. C. Tolefson, 45-years experience) and Mr. Charles Garland, PE (50-years experience).

NEW! EZ Moor Magnetic Ship Hull Mooring Rings

Temporarily attach EZ Moor mooring rings on a steel ship hull at pier level or any other preferred location, and tie-off breasting and spring lines at optimum 90⁰ and 0⁰ angles for maximum holding power.

The problem of poor mooring line angles is generally the result of an undesirable but necessary geometrical mismatch between the tie-points on the ship and the bollards, bitts and cleats on the pier. This problem can now be solved by placing an EZ Moor magnetically-held mooring ring on the ship hull directly opposite a pier fitting and get maximum benefit of a 90⁰ breasting line angle, for example. Similarly, place an EZ Moor mooring ring at pier level but horizontally displaced from a pier fitting and get maximum benefit from a horizontal, longitudinally disposed spring line.

In the manner just described, EZ Moor magnetic mooring rings permit holding a ship in place, almost motionless against the external effects of mild winds and nearby passing ships. This allows, of course, the uninterrupted loading and off-loading of liquid and bulk cargo and the comfortable movement of people and passengers across the space between ship and pier.

There are two styles of mooring rings available.

Friction Rings - provide resistance to line pulls parallel to the side of the vessel (spring lines).

Breasting Rings - provide resistance to line pulls perpendicular to the side of the ship (breasting lines).

Point-of-Contact:
Dr. D. C. Tolefson
804-694-5805
Click Here to E-mail Us
EZ MOOR Designer and Provider

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