Rigid Buoyant Boat
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A Rigid Buoyant Boat ( RBB ) is a light all-plastic boat with high performance. The concept follows the RIB (Rigid Inflatable Boat RIB), however, instead of the 'tube' has an upper fixed 'edge' of polyethylene, polyurethane, or aluminum. According to the name, an RBB achieves its buoyancy solely through its rigid and light hull. Even if an RBB is completely flooded, it remains afloat and therefore buoyant.
The light fuselage consists for example of GRP or of HDPE panels (HDPE High Density Polyethylene ) welded together . This creates extremely robust boats that can easily absorb shocks and are therefore ideal for cruising on rough environments or shallow waters. Repairs to the hull can be carried out without shipyards. As with a RIB, the hull is shaped in the shape of a deep V, making it very agile and easy to maneuver. With the appropriate engines, the light boats can be brought up to speeds of up to 50 knots .
The lower volume of the 'collar' compared to the extensive curves of the rubber hoses on the RIB leads to more available deck space on the RBB. In the event of damage, these protective edges can easily be replaced.
User in Germany is z. B. the German Society for the Rescue of Shipwrecked People . The 8.9 meter long and three meter wide boat type has a draft of only 65 centimeters and is used at the volunteer stations on the Baltic Sea. Two outboard motors are attached for propulsion, which ensure a speed of 38 knots. Like all SAR units of the DGzRS, this boat is also a self-righting device thanks to an inflatable airbag in the mast at the stern.
The British Royal National Lifeboat Institution (RNLI) uses four boats of an RBB type on the Thames and describes them as E-Class Lifeboat. The MK2 boats are 10.5 meters long and can reach a speed of 40 knots via waterjets .
Web links
Individual evidence
- ↑ Characteristics of all- plastic boats on arcticboats.fi accessed 2020-02-26
- ↑ RBB vs. RIB - who wins? on tidemanboats.com (Engl.) accessed 2020-02-26
- ↑ 8.9 meter lifeboat accessed on seenotretter.de 2020-02-26
- ↑ RNLI's E-class Lifeboat from rnli.org accessed 2020-02-26