RIB Boats for Military purposes with general
characteristics, performance and construction details.
RIB Boats is
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 buoyancy.
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 between vessels.
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 .
Boats are used as rescue craft, safety boats for sailing, dive
boats or tenders for larger boats and ships. Their shallow draught, high
maneuverability, 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 along the road on trailers.
RIB Boats technical detail
High-performance RIB Boats, Hydroplaning.
RIB Boats are light weight and designed with
a V shaped hull that enables hydroplaning. The RIB Boats hull enable these
boats to outperform some types of similarly sized and powered boats,
although a pure fiberglass speedboat with similar dimensions should
typically be faster, due to its being lighter with an arrow like water
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
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
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 plane on.
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 puncture, each section 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+
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
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 your
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
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 the boat.