Our regular news digests are back! Today we will talk about PressurePores technology, new catamaran and Mercury Avator engine!
New PressurePores Technology
Known for its propulsion propulsion systems, Oscar Propulsion Ltd has teamed up with the University of Strathclyde to introduce an interesting new propeller technology. According to the company, the engineers managed to create a unique propeller that emits a minimum of noise both above and below the water.
Thanks to the improved design, it was possible to reduce the vortex cavitation of the propeller tip. In simple words - to reduce the emitted noise. The solution was simple, but at the same time ingenious. Small holes were made in the blades of the propeller, which help to reduce the pressure on the metal.
Lars Eikeland, director of Oscar Propulsion, said: “While we [yachtsmen and scientists] have learned to cope with noise above the water with relative success, then for some reason many people forget about the underwater space. Underwater noise from the engine and propeller blades is one of the most annoying phenomena that has appeared due to commercial shipping. The new technology solves this problem.”
Perhaps, having read up to this point, you wondered: “Why reduce the level of underwater noise?” Lars also answers this common question: “Constant background low-frequency noise is extremely detrimental to marine life. Alas, many shipping areas used to be teeming with a wide variety of animal and fish species, but now these species are close to extinction.
PressurePores technology has been developed over four long years. It was created using cutting-edge research in the field of computational fluid dynamics, modeling and testing. Thanks to PressurePores, cavitation is reduced by 14% and noise levels are reduced by up to 10 dB.
A fairly large-scale study and testing in the scientific field was carried out - many research yachts were re-equipped with new propellers. One example is the Princess Royal catamaran. This 19m multihull is the permanent floating laboratory of Newcastle University.
According to recent studies, noise above 160 dB poses a serious danger to marine life. Many species simply lose their orientation in space due to this level of noise.
First reviews of catamaran Outremer 52
The first serious reviews of the Outremer 52 catamaran began to appear actively. According to reviewers, the multihull absorbed all the best from the 51 and 55 models. It looks more like the 51 model in driving performance, but the design is clearly inspired by the Outremer 55.
The catamaran is geared towards an average speed of 10-12 knots for a comfortable cruising. The Gunboat subsidiary was also brought in to build the new hull and lighten the design. At the same time, according to the shipyard, the rigidity of the frame of the hulls has been increased. Compared to the 52 and 51, the 52 is slightly heavier than its predecessor. At the same time, the new kat has a larger sail armament.
The interiors of the Outremer 52 were also recycled. The well-known company VPLP had a hand in interior design. The visibility and interior design have also been improved.
The shipyard offers several configuration options. Available in three or four cabin layouts with three different styles. As with the older models, the Outremer 52 offers several options for an additional cabin that can be customized. There are options with the creation of a kind of "office space", a personal study, a laundry room or a full-fledged children's cabin.
In the stock configuration, the multihull will be supplied with diesel engines. As if anticipating the questions of environmentalists, the shipyard said that since the catamaran is sailing, “these engines will rarely be used.” In any case, the engine can be changed to a more environmentally friendly one.
It is also possible to install solar panels with a capacity of 2100 watts.
|Draft||1.07 - 2.30 m|
|Displacements||12 500 kg|
New Mercury Avator Outboard Specifications
At the recent CES 2023, Brunswick and its subsidiary Mercury Marine unveiled a new outboard motor. The engine was named Mercury Avator and was presented in Las Vegas. By the way, it was about this engine that we wrote the other day in our Telegram channel. We will be glad to see everyone!
According to the company, this engine is a new milestone and a new step in the marine industry. The Avator 7.5e is just the first in a series of electric outboards that will be introduced in 2023.
The Avator 7.5e is capable of delivering up to 750W of power. The closest analogue from the world of fuel engines is Mercury 3.5hp FourStroke. The motor will be delivered with tiller or remote control. The main scope of application is small sailing and motor boats, RIBs, tenders.
Reviewers noted the ease of motor control. The outboard motor comes with removable batteries and “intuitive controls”. The case has a bright and easy-to-read display. Thanks to it, you can track the charge level and the remaining power reserve.
Inside the engine are powerful lithium-ion batteries from Mastervolt. Batteries are IP67 certified against drops, dust and dirt, and against water. They can be easily removed from the case and put on charge.
Interestingly, the engine can be "connected" with other devices based on iOS and Android. In the app stores, you can install a free app that will make it easier to control the engine. The application also has a whole database of benefits and the ability to contact the company's technical support.
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