A fresh wind is blowing along Sweden’s coast near Karlshamn this morning. The coffee is steaming in the small harbor master’s hut and the cinnamon buns are fragrant. We have breakfast quickly, because the tiger is waiting at the jetty!
It is white and made of plastic. That is new. So far Silver Boats has not built any pure GRP boats. The hulls were always made of aluminum, classically Finnish. With the new Z series, there is now a plastic series – and Silver now has three model series: the X series made entirely of aluminum, the Y series with aluminum hull and GRP deck and – like the Tiger – the Z series made entirely of GRP.
New design for the new Z series made of GRP © Kerstin Zillmer
“If you compare it to a car, it would probably be a Volvo,” says Dominik Entzminger from importer Boat Solutions, as we stand on the jetty right in front of the boat. The new hull shape, the flattened front end with integrated lights and the flat front section give the Tiger a sporty look. The cockpit is spacious and minimalist.
Stored where you need it
The low, long windshield blends in well with the sporty look and offers good protection against cold winds on the test day. The fender boxes on the side of the stern are clever and unique. The fenders can be stowed away quickly and space-savingly – exactly where you need them. The lockable lockers are also a nice plus.
The flattened front nose with integrated lights © Kerstin Zillmer
Fender storage in the right place © Kerstin Zillmer
The recessed bimini is easily accessible © Kerstin Zillmer
Storage boxes with lockers © Kerstin Zillmer
Minimalist, but with a hob © Kerstin Zillmer
The best way to get into the boat is via the bow, which leads safely ashore via two steps, and in the north often onto the best accessible rocks. The flat nose is ideal for this.
Only flying is better!
I board with my Finnish BOB colleague Jan Sjölund. Behind the harbor, still with a small wave, we set off and are amazed at how quickly the Tiger gets into planing speed. The boat cuts the waves very smoothly. You can’t hear any waves hitting the hull. The view over the coaming shows an interesting picture: there is hardly any splash water to be seen. How come?
The petestep hull diverts the water to the rear © Kerstin Zillmer
The hull of the Silver has a completely new shape: a Petestep hull, named after the founder and developer Peter Bjersten. While in other hulls the sliding stringers run parallel to the keel direction, Petestep uses so-called “deflectors”. Unlike the familiar parallel stringers, these steps run from an optimally calculated point to the rear.
Deflectors instead of parallel stringers © Petestep
This is intended to reduce the resistance of the hull in the water. The deflectors divert the water aft and do not push it to the side as spray, as is usually the case. This has various positive effects: The hull lifts out of the water faster and starts planing sooner. According to the manufacturer, this means that up to 35 percent less fuel is required.
More thrust, less resistance
Due to the lower water resistance, the frictional resistance is also lower. That means more thrust. By aligning the deflectors, the hull hits the shaft much less. This makes the ride smoother and more stable. This is what we also clearly felt during testing: the hull behaves softer, and that feels great. Although the 150 hp Honda Marine engine is audibly at work at the rear, the noise level is lower.
As we leave the land cover, the wave becomes choppier. The torso continues to react smoothly and track true. And it also feels much more comfortable against the waves than other boats of this size. According to Petestep, the G-force, i.e. the centrifugal force, is reduced by 30 percent. Cornering stability is significantly better thanks to the new hull. No yawing and no shifting when cornering fast and tight.