RIB Kits-
An open RIB can be built in about 90 hrs
4 to 7m
A new
quick build design, for 2010 also
To potential Gemini rib kits builders.
We can now supply all relevant
documentation, technical files, owners hand book etc., on
completion of the boat, enabling you to apply to the RYA for a
C.I.N number, (craft identification number, once you have this
number we can supply the plate to affix to the transom of your
boat.
You will then have a CE for your self
build RIB.
For this we will need pictures of all
stages of the craft being built.
Kind Regards
Jack Bowran Managing Director
Gemini Industries Limited
The super fast DH Mosquito
Gemini Rib hulls are made from plywood, as was the
aircraft above.
Some of these aircraft are still around 65
years on
Tubes can
be the new Hypalon Hybrid (see rib tubes)
Nene cabin ribs The
only 8m. 2- 4 full berth cabin RIB we know of.
We can supply all the
materials for the cabin, internal and external, all parts
are cut to shape, and ready for assembly. Patterns and
drawings are supplied for the hull construction. Many hulls have
now been built, and proved to be easy to build.
We can also
supply tube and plans for overseas clients.
Nene SP 800
Nene SPX 800
All Hulls, RIB Open
Boat, or Cabin Boats
The hulll
is much lighter than a GRP hull, yet it is of exceptional strength, impact
resistance and durability, due to the filling of the
hull with foam (optional).. Together with a Epoxy/glass outer skin, It also looks as good, if not better
than a moulded GRP hull. Being so light, but incredibly strong,
it requires a much smaller engine. An excellent
performance with a mere 50hp. outboard, this is for
a 6 meter boat. A 90hp O/B will enable the boat to carry 6
divers, and their kit. at around 30 knots, or more.
Many more pictures
Kits can be shipped to any Country.
Gemini 6 and 7
meter RIB Kit.
Length (m)
6 7
Rigid Hull length overall (m)
5.2 6
Beam overall (m)
2.5 2.5
Rigid Hull Beam (m)
2.0 2.0
Designed draft (m)
0,30 0,30
Designed draft with engine (m)
0.80 0,80
Chamber diameter (m)
0,48 0,48
Chamber quantity (pcs)
4 6
Weight of hull and tube (Kg)
120 150 Typical
Weight total with engines and fuel
250 300 Typical
Standard engine (HP)
50-90 120
Max power (HP)
90
120
Cruising speed (knots)
35 40
Max speed (knots)
35 -40 45
Max person (persons)
6 8
Crew (persons)
1 1
Construction
This rib
is constructed with a medium to deep “V” warped hull,
from a corrosion resistant GRP ply epoxy composite.
The hull can be to any regulation, regarding strength
and impact resistance. Can be rendered unsinkable, by
the addition of foam in the hull. Anti-slip glass cloth
/ epoxy 12mm. plywood deck.
The tubes of the rib are constructed from Polyurethane
, either black or orange
Hypalon
850 gm.). black,
orange or grey
PVC.1100DTex..in
almost any colour,
The tubes (Collar) have 4 or (6)
separate chambers, each with its own independent valve
in an inner tube. The tubes are 480mm in diameter.
Rope holders for
lifelines. and 4 PVC fender
/ rubbing strake, 100 or
200mm. wide
Repair kit for inflatable tube (incl. patches for tube
and inner tube material)
Please note we cannot ship Tube glue by
air freight, but you can get it
locally.
The running, or
planning chines are screwed and glued to the exterior of the
hull
Fine example of
a clients home made console and seats, (not finished yet)
The
boat below, is at a later stage than the same boat above
During sea trials the boat
cruises, with 4 on board, at up to 40kts. with. 2x70hp
.
Other boats
Basic build design with foam filled
hull.
A
Continuously Variable Dead rise V
Means a Soft and Stable ride.
Our Deep V hulls, deliver a soft ride, combined with high
fuel efficiency. A Gemini hull
slices through seas effortlessly with a
sharp point of entry, and the varying dead rise
builds
buoyancy that lifts the boat as it proceeds through waves.
Result: better
performance, softer ride.
From
an engineering point of view, wood, the oldest boat building
material remains one
of the best. Wood is light and strong,
pliant yet remarkably stiff. It is warm, quiet and
does not sweat. For the artistry of the
shipwright, wood is also the material of choice.
The combination of wood, epoxy (the
strongest man-made adhesive) and an epoxy
outer
skin, optimizes the wood's strengths and
eliminates its weaknesses. By creating a
barrier to moisture, the strong, light and
durable GRP / wood /epoxy
structure is
stabilized, and leaks, blisters and rot are
no longer a concern. The epoxy internal
Hi Jack,
Attached are some pictures of the maiden voyage this Sunday. The boat sits
well on the water is very stable and handles well.
Other than a bit of a problem launching, The whole boat is excellent.
Thank you. It is a pity I did not finish it until now at the end of the
season. (I should have worked harder!) I will have another engine
ready for next season!
Hi Jack,
Attached is a picture of the boat at speed with an Evinrude 70 on the back.
I re-enforced the transom with an additional sheet of ply. I bolted and wired up
the Evinrude last week. The trials were Sunday, now it goes as it should. It
handles everything well, even some heavy chop. The boat feels safe and secure,
the ride is smooth and there was no sign of chine riding or any instability at
all.
It would seem that the hull and engine power are well matched.
I do not have a
top speed for you as I have not wired up the speedo yet. However
there was a
Tornado rib of about the same size with a 150 Yamaha on the back and
we had a
bit of a race. We kept up easily with him and were pulling ahead when
he gave up!
z
