RIB Boats for water sports, leisure and
recreation with general characteristics, performance
and construction details.
Boats , the layman’s term used for a
rigid-hull inflatable boat, also spelled RHIB and better
identifies this water craft as a RIB Boats and not
a lamb, beef or for that matter human rib. RIB Boats
is the best term used and will remove any frustration; as a
matter of fact you will find exactly what you are looking
for amongst the range found in RIB Boats.
RIB Boats are light-weight,
high-performance and high-capacity boat constructed with a
solid, shaped hull, usually of fibreglass with flexible
tubes at the gunwale (a nautical term that describes the
top edge of the sides of a boat). RIB
Boats provide stability and seaworthiness as the
inflatable collar allows the vessel to maintain
RIB Boats development began
with inflatable boats and includes uses such as work boats
in Commercial Operations, LEISURE
Boating supporting ship to shore facilities on larger ships
and yachts as well as uses such as life craft boats and
Military Boats, used to patrol at sea and transport troops
Small RIB Boats used for diving.
RIB Boats are
commonly available from 4 to 9 metres long, however, a
reputable manufacturer can usually make smaller or
larger boats to order, as small as 2.5 in length up to
18 metres and is usually propelled by one or more
outboard motors or an inboard motor that creates a
water jet or stern drive. Generally the motors range
from 5 to 300 HP.
RIB Boats are used as rescue
craft, safety boats for sailing, dive boats or tenders for
larger boats and ships. Their shallow draught, high
manoeuvrability, speed and relative immunity to damage in
low-speed collisions are advantages in these applications.
RIB Boats up to 7 metres in length can be towed
the road on trailers.
RIB Boats technical
High-performance RIB Boats, Hydroplaning.
RIB Boats are
light weight and designed with a V shaped hull that enables
hydroplaning. The RIB Boats hull enables these boats to
outperform some types of similarly sized and powered boats,
although a pure fibreglass speedboat with similar
dimensions should typically be faster, due to its being
lighter with an arrow like water cutting shape.
High-Performance RIB Boats can operate
at speeds that vary between 40 and 70 knots (74 and 130
km/h), depending on the size of the craft, number of
passengers and the weight of any cargo or equipment that is
being carried. Speeds achieved would also be dependant on
engine types and sizes.
The RIB Boats “Deep-V" rigid hull
Hull can be made of steel, wood and
aluminium, however, the most common materials these days is
a combination of wood for the structure and glass fibre
reinforced plastics which are technically referred to as
GRP or FRP composites to provide for the intricate shaped
and smooth surfaces and in some cases Kevlar is included
for extra strength.
RIB Boats hulls are shaped to increase
the performance of the boat in the water by optimising its
hydroplaning characteristics. "Deep-V" hulls cut through
waves easily and require greater engine power to start
planing than a "shallow-V" hull does.
“Shallow-V” hulls plane at lower speed and deliver a bumpy,
choppy and uncomfortable ride.
As with the design of most boat hulls
they represent a compromise of different design
characteristics. Modern "all round" RIB hulls combine a
deep v hull at the bow which flattens out to present a
broad planing pad. This is a flat area on the rear of the
hull designed to allow the boat to have a stable surface to
Tubes are generally constructed in
separate sections to ensure support of the boat from the
remaining un-punctured sections of tube and thereby reduce
the effect of a punctured section, each having its own
valve to add or remove air as required. Larger boats (7m+)
have 6 or more chambers with a valve for each chamber.
Hypalon and uPVC (Polyvinyl chloride)
are the preferred material for tubes, though some
manufacturers use PU (Polyurethane). Hypalon tubes are easy
to manufacture and repair by a novice and simple puncture
repair kit. Hypalon is not airtight and must be combined
with Neoprene to make tubes airtight. These tubes are known
to last for 20+ years.
PU tubes have been found to be stronger
when new but deteriorate after the second or third tear and
generally do not last longer than five years, while a
Hypalon/Neoprene tube, by the age of five years will have
similar levels of durability to that of a PU Tube, which is
why Hypalon/Neoprene is mostly used on RIB Boats.
Polyurethane (PU) tubes are difficult to
manufacture, hard to repair and are consequently not the
tube of choice for RIB Boats construction. PU has the
advantage of being very tough, it can be made knife-proof o
bullet-proof. Unfortunately to make PU airtight it has to
be used in layers combined with neoprene. PU ages quickly
and lasts 10 to 15 years.
Wheelhouse / Cabins
RIB Boats with a small wheelhouse
RIB Boats can have hard-tops known as a
Cabin or Wheelhouse and usually made of Fibreglass. A cabin
offers protection from the elements to both crew and
passengers at the same time protecting equipment,
suspension seats and navigation instrumentation.
Some RIB Boats have cabins with accommodation for two
people with chemical toilets.
Locating the RIB Boats best suited to
Found the boat that you desire?
For recreational purposes you will find
both a wide range and the specific ASIS RIB BOATS to meet
your individual requirements, it is certainly worth the
time invested to make the most cost effective decision from
the comprehensive range available.
Once you have chosen your boat, you will
then be able to choose from a range of optional extras to
meet the specific application for which you intend to use