Spring in Virginia ! join us for a two-day propeller sizing seminar in Virginia Beach, Virginia on April 23-24. The seminar - Fundamentals of Propeller Sizing ( with PropExpert) - is for everyone who sizes and analyzes inboard propellers for all boat types, from large work boats to smaller "go-fast" boats.

Enhance your use of PropExpert.

Propeller Sizing Seminar

Spring in Virginia! Join us for a two-day propeller sizing seminar in Virginia Beach, Virginia on April 23-24. The seminar - Fundamentals of Propeller Sizing (with PropExpert) - is for everyone who sizes and analyzes inboard propellers for all boat types, from large work boats to smaller "go-fast" boats. The seminar is being hosted and sponsored in part by Wildcat Propellers of Chesapeake, Virginia (

Course description
The seminar will be in two parts, and is suitable for all levels of experience in propeller sizing. Although HydroComp's PropExpert software is used to illustrate each topic, you do not need PropExpert to benefit from the seminar. All participants will receive a course packet with the seminar curriculum, as well as a variety of reports and resources.

We begin with a general discussion of fundamental propulsion relationships, then build an understanding of the propeller sizing objectives and processes, and finish with actual case studies where participants will be challenged to solve some problems. At the conclusion of the seminar, there will be ample time for participants to present and discuss some of their current projects.

Continental breakfast and lunch are provided each day.

Why attend?
Conducted by Don MacPherson, HydroComp's Technical Director, our training seminars are an outstanding value. You will leave with a new understanding of propeller performance and be better able to size successful applications for your clients and customers. As customers become more assertive in seeking quality answers to their problems, you will need to be able to provide these answers in a reliable and professional manner. These two days will help you not only minimize the risk of sizing poor installations, but you will learn how to analyze an application and be in a position to provide just the right solution - one that is quick, reliable and cost-effective.


Day 1 - Propulsion & Sizing
Morning Session 9:00a-12:00n

Part 1. Basic Propulsion Relationships
- Steady-state performance
- Hull and propeller
- Engine and propeller

Part 2. The Design Objective
- What do I want to do?
- Considerations

Part 3. Hull, Speed and Engine Data
- Describing the hull
- Hull influences
- Predicting speed
- Engine data

Afternoon Session 1:00p-5:00p
Part 4. Initial Propeller Parameters
- General characteristics
- Diameter and pitch
- Blade area ratio and number of blades
- Skew and rake
- Revolutions
- Cup
- Performance corrections

Part 5. Calculating the Proper Size
- Design speed
- Design engine power and RPM
- Gear ratio
- Calculation process

Day 2 - Analysis & Case Studies
Morning Session 9:00a-12:00n

Part 6. Analyzing Performance
- Evaluating engine operation
- Propeller strength
- Tip cavitation
- Back cavitation

Part 7. Incorporating Sea-trial Data
- Recording data
- Create "anchor" to real data

Afternoon Session 1:00p-5:00p
Part 8. Case Studies
- Repowering example (14.5m motor yacht)
- Crew boat
- Tow boat
- Diagnostic analysis & troubleshooting

Part 9. Open Forum
- Participant's projects

Part 10. General Q & A (as time permits)
- Open review of questions

The training seminar is over two days on April 23rd and 24th, 9:00a to 5:00p each day. The number of attendees for all HydroComp training seminars are limited to insure personal attention. Call early to reserve your place.

The seminar will held at the Sheraton Oceanfront Hotel in Virginia Beach. The Norfolk, Virginia airport is approximately 16 miles from the hotel, and public transportation is available. The Sheraton Oceanfront - "a beautiful resort hotel on the exclusive northern end of the Virginia Beach boardwalk" - is located at Oceanfront & 36th Street, telephone (800)521-5635 or (757)425-9000.

Southern Virginia is host to many exciting cultural and fun activities for the entire family, including the Chrysler Museum, Colonial Williamsburg, Busch Gardens, Virginia Marine Science Museum, The Mariners Museum (this is fantastic!), Virginia Air and Space Center, outlet shopping, and the beaches (of course!). Visit these web sites for more information:

Hotel accommodations
Hotel accommodations should be made directly with the Sheraton Oceanfront Hotel. A block of rooms with special rates ($96 plus tax) is available until April 8th. Call (800)521-5635 or (757)425-9000, and be sure to mention "HydroComp/Wildcat Propellers" when reserving your room. If you need further assistance with travel arrangements, please contact our office.

Attendees will need only a basic knowledge of propellers. Some experience with the PropExpert software will be helpful, but not required. We highly encourage every participant to bring a notebook computer with their copy of PropExpert (or other sizing software) already installed. Also, don't forget your security key. Electrical hookups will be provided.

The cost of the seminar is $595.00 for the two days, which includes all course materials, continental breakfast and lunch. Discounts are available for additional participants from the same company. Full payment is required to hold your place in this seminar, and is non-refundable after April 14th.

How to register
- Click the link and print out the Propeller Sizing Seminar Registration Form page.
- Fill in the information, and fax or mail it back to us with your payment.

For more information, please contact
HydroComp, Inc.
13 Jenkins Court, Suite 200
Durham, NH 03824 USA
Tel: (603)868-3344
Fax: (603)868-3366

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