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Bollinger Shipyard's Propeller Shop is a modern 27,500 square feet fully-equipped manufacturing and repair facility featuring pitchometers and four hydraulic presses with up to 400 tons capacity that allows straightening and re-pitching propellers of up to 20 feet in diameter without heating the metal.
The shop's computerized pitchometer is capable of measuring pitch, blade widths, diameter and rake. It also creates a detailed image of each propeller blade, that indicates the exact point of required work. This dramatically reduces propeller survey time, provides more accurate measurements, reduces overall time in the shop and improves propeller performance and efficiency.
Bollinger Quick Repair has been in the propeller manufacturing business since the late 1940's. We have over 2000 propeller patterns in stock and the capability to make a new pattern in 10 days. All Bollinger propellers meet or exceed ABS requirements. Propellers for Sale
The shop also services other industries such as municipal drainage systems with huge impellers. Storage of customers' propellers is also available.
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All propeller blades are tailor made for every project giving the optimum propeller for each and every ship. The design of propeller blades is based upon Helseths long experience in manufacturing of propellers, and by use of sophisticated design and analysis tools giving a low noise propeller with high efficiency and no cavitation problems.
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One of a pair of handed propellers supplied to the UK Ministry of Defence for the twin screw Auxiliary Oiler Replenishment Tankers “Fort George” and “Fort Victoria”. These propellers, which have a very complex geometry, were designed by DERA, Haslar.
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Blades: 3,4,5
Pitch Ratio: 0.60 - 2.00
Area Ratio: 0.20 - 1.10
Skew Angles: 0°
Section Type: Ogival:
Remarks: Most widely use propeller series. Suitable for most applications. Cupped available.
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In order to achieve the highest possible total efficiency of the vessel, the propeller must be a perfect match with the engine and the hull. A fixed pitch (FP) propeller is the choice when optimum efficiency, reliability and robustness are required. FP propellers are usually applied in ocean sailing vessels, for example container vessels, tankers, bulk carriers and dry cargo vessels.
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The propeller is of course one of a ship`s key "attachments".
As the critical intermediary between the power of the main engine and the water, it must push the ship across the oceans at the highest possible speed. The propeller of a large container ship rotates about 140.000 times a day. This performance must be maintained over prolonged periods, under difficult conditions. We have made it our business to design and produce propellers that can easily cope with these demands.
More than 50 years of experience in the design and production go into MMG propellers, combined with the latest computer-aided numerical processes and the most up-to-date equipment in the foundry and machining workshops. By constant investment in all areas, we keep abreast of the latest developments in international shipbuilding.
MMG (Mecklenburger Metallguss GmbH) is thus one of the leading propeller manufacturers in the world. We produce propellers for all categories and sizes of ships. This also includes propellers for post-panamax container ships, VLCCs and special propellers for the navy.
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Yuanhang designs and manufactures Fixed pitch propellers for container ships, cargo ships, tankers, tug boats, trawlers and fishing boats etc.
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Propellers are designed with a computer panel code method allowing the entire 3-D study and optimization of the geometry. To properly interface the propeller with its intended application the hull lines of any design of particular importance can be preliminarily analyzed to predict resistance, trim and wake field at the prpeller disc. Once the velocity field on the propeller has been computed, it is used as "inflow" for the design of the propeller with the panel method and CFD (Computational Fluid Dynamic) analysis.
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