Frequently Asked Questions

Question: Are strain gauge alignment measurements worth conducting on my vessel?

Answer: For most vessels over 200 feet, YES. It is becoming more common to include the requirement for strain gauge alignment measurements as part of the construction specifications.


Question: Are Gap and Sag measurements as good as strain gauge alignment measurements?

Answer: For most shaftline arrangements, NO. Gap and Sag values, which are based upon a theoretical model, generally require higher tolerances than the theoretical model can provide. However, Gap and Sag measurements are useful to provide a "rough" alignment prior to strain gauge measurements.


Question: What is considered to be the allowable span between bearings?

Answer: A span of 12 to 24 times the shaft diameter between bearings is a good guideline. However, a complete alignment and vibration analysis is required to determine if the bearings are spaced properly.


Question: The propulsion machinery works well on many other vessels, why are components failing on this one?

Answer: No two vessels are exactly alike.


Question: What approach would you recommend to determine the root cause of failure and the least cost solution to marine propulsion machinery failures?

Answer: LLT applies a "Systems Engineering" approach to all such cases. All aspects of the propulsion system and component design, construction, operation, maintenance, and installation are examined. LLT's extensive library of experience is drawn upon for empirical support and a least cost solution is sought. A review of the documentation, analytical modeling and full-scale testing is usually required.


Question: What is important to consider for acceptable alignment and vibration characteristics in the design of a marine propulsion shaftline?

Answer: Everything.


 Question: What are the recommended Golf courses near shipyards?


                         Coop%20Coop1%20and%20Buba-Urgin%20low                 Royal%20County%20Down%20-%201

                                    SNAME 2010 Annual – 1st Place                              Royal County Down - Newcastle, Ireland (Best)


 Royal Port Rush, Northern Ireland (2nd Best)                         Indah Puri Golf Club – Batam, Indonesia


Antwerp, Belgium: Too many beer and mussels

Anacortes, Washington, USA: Avalon Golf Club

Batam, Indonesia: Indah Puri Golf Club

Grand Bahamas: Lucayan (Locally known as the “Country Club”)

Helsinki, Finland: Top Deck Disco Dancing On Board the MS Silja Serenade

London, England:  Dogs Bullocks at local pub

Ireland: Lahinch, Ballybunion, Waterville, Old Head

Marinette, WI: Riverside Golf Club

Northern Ireland: Royal Port Rush, Royal Belfast, Hollywood, Royal County Down, Ardglass, Balmoral

Norfolk, VA, USA: Byde-A-Wee, Norfolk Naval Base

Panama City, Florida, USA: Lagoon Legend and Club Meadows (Marriot Bay Resort)

Pascagoula, Mississippi, USA: Pascagoula Golf and Country Club, Bayou Pines, Pelican Island

Philadelphia, PA, USA: FDR, Cobbs Creek

Powel River, BC, Canada: Myrtle Point

Punta Arenas, Chile: Club de Golf Rio Los Cievos

San Diego, CA, USA: Cornado, Salt Creek, Torrey Pines

San Francisco, CA, USA: Pebble Beach

Scotland: St. Andrews:  Kings Barns, New & Old Course, Jubilee Course

Singapore: Orchid Country Club, Santosa Island Golf Club

St. Petersburg, Russia: Too much vodka

Tuktoyaktuk, Northwest Territories: Make your own in the Tundra or on the Ice

Vancouver, BC: Northlands, Squamish, UBC, Gleneagles, Shaughnessy Golf and Country Club

Victoria, BC: Olympic View, Salt Spring Island

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