featured
projects
Novel or "different" projects, current or past.
M.V. MAGSENGER 2 - LOWER ENGINE REMOVAL -
Dec 2011 / Jan 2012
The Magsenger 2, is a brand new 250mx60m Bulkcarrier,
which underwent engine problems on maiden voyage that necessitated
the removal and replacement of the lower crankcase. However the more
tricky part is the engine weighs 360 tonnes, is 3 decks high, and
the ship was built around it. The lower section to be removed weighs
some 140 tonnes, and the upper section, once stripped down, which
needs to be lifted and suspended, also weighs about 140 tonnes. Hence
significant support mechanisms had to be put in place. This is where
Triton came in, contracted by Dormac, who were the main ship repair
contractor. Triton were tasked to perform all the design and analysis
works necessary to lift and support, jack and move the relevant large
mass components. These various design drawings and reports then distributed
for review and acceptance by third parties. These modifications included
the necessity to cut a large access hole in the bulkhead that seperates
the engine room and the 7th Hold, to allow the replacement parts to
be lifted out of, and into, the hold and then slide into the engine
room on custom designed rails and bogey systems.
A more detailed project description along with analysis
plots will follow when time allows, but in the meantime, some project
photo's can be see on HERE.
The project is ongoing.
NMP PHOSHATE SAMPLING - LAUNCH AND RECOVERY
SYSTEM
A generic sampling system was developed through a
series of concepts, through to detail design and fabrication, whereby
the unit can fit onto any applicable Offshore Supply Vessel / Anchor
Handler, for NMP (Namibian Marine Phosp[hates, Pty Ltd.
The system recovers samples from the seabed up to
400m waterdepth, using a custom designed Grab (by Arlona Engineering)
and is handled via a A Frame, and Winch Tower, Hopper, Conveyor Unit,
to allow for bagging on deck. Triton were the principle design contractors
and project managers. Basic Hydraulics and Control System were responsible
for the design and supply of all hydraulics and control components
of the system, and worked with Triton in a close and all inclusive
arrangement, with the owners themselves. This arrangement extended
through all the concept design phases leading up to detail design,
fabrication and installation. BELMET won the contract for fabrication,
workshop installation and onboard installation. The system has been
installed on the Smit Madura for its first sampling excersize.
KENMARE FLOATING TREATMENT
PLANT - All Floating Aspects, Pontoon Design, Strongback Design, All
Equipment Foundations and Surge Bin Support
Triton, working together with (initially Akersolutions,
and then EP-C) are responsible for the pontoons and strongbacks, along
with all other deck foundations, that support the new Floating Treatment
Plant for KENMARE, for the Moma Titanium Dune Mining Project. Areas
of responsibility include, the pontoon structural design, structural
interfacing with column loading from the plant above, flotation, stability,
mooring etc. Analysis works include global model floating analysis
with blobal bending, plus local modelling of strongbacks structures
with prescribed bending and external loading, in static stress and
buckling.
ZAMBEZI FERRIES
A series of River-Crossing-Ferries have been designed,
with the first one built and commissioned by Mike Bullock at Kazungula,
Botswana, with the 2nd well under construction. More detail and a
link to photo's will be updated when time allows:
TRISTAN BARGE
A novel idea for low cost, transportable barge is
this Tristan Barge, using the concept of connecting plastic floats
tied together with a strong lattice structure frame and wooden deck.
This barge has a 20tonne carrying capacity and has already been highly
successful at the island of Tristan, in the use of transhipping cargo
between visiting cargo vessels and the harbour, where draft limitation
restrict access by those ships. It was also easily transportable to
the island and could be launched from a single point lift from the
ship.
100tonne CHAIN PULLER - Student Intern Design
Project
With Salvage companies or salvage operations often
in need of a means to apply large shore based forces on a structure,
or standard ship, or even capsized vessel (like the case of the Laverne
which capsized in the harbour), Triton (together with Basic Hydraulics)
identified the need to develop the design of a 100t Chain Puller.
Such chain pullers could be used in isolation or
any number coupled together through a common control system. This
student intern design project (under taken by Morne Le Roux of Stellenbosch
University) included the concept design, structural analysis, hydraulic
equipment, such that should an inquiry come in, Triton together with
Basic Hydraulics could go into production at relatively short notice.
WESTERN CHALLENGE and SHELF EXPLORER - Likely
Conversion / Refit - 2009 / 2010
The Western Challenge is a Ore Transport Barge, recently
aquired by Kenmare (owners of the Bronagh J, Transport Vessel, designed
by Triton, featured here).
Preliminary and conceptual design and studies have
been undertaklen for the refit of the Tug assisted Western Challenge
to be made fit for purpose at MOMA MOZAMBIQUE to supplement the Bronagh
J.
NEW DOUBLE SKIN BUNKER BARGE & DOUBLE
SKINNING EXISTING BUNKER BARGES
The double skin SMIT LIPUMA fuel bunker barge was
designed by Triton, and build by Dormac in Durban. She was launched
in Nov 2007, and due to come into service early 2008.
The design of the double skinning of the exisiting
Pentow Energy, has been completed, with construction due to begin
early 2008.
For more detail, click here
MOMA BARGE
A self loading, self unloading, self propelled manned
barge was designed, for construction in Singapore.
The barge is to be ABS classed, and transports 4000tonnes
of Titanium based raw product between a custom built jetty near Moma,
in Mozambique, and discharge in an awaiting handimax bulk carrier,
some 7 to 10 Nm offshore. Typically 10 trips between the loading jetty
and the bulk carrier would required, to load the ship.
Some 600 000 tonnes of product is expected to be
shipped per year.
For more detail, click here:
NAVAL VESSEL DISPUTE SETTLEMENT
Triton Naval Architects were contracted by Price
Waterhouse Coopers (Kenya) to assist in the dispute settlement over
the procurement of the new build Lloyds classed, Naval Vessel "Jasiri",
built in Spain for the Kenyan Navy. An ongoing involvement between
2007 and 2010/11.
SAIBOS DOCKING
In Jan 2006 saw the eventual dcking of the FPS SAIBOS,
after much pre-planning w.r.t. to docking block arrangement and the
design and analysis of a stern frame, which would be capable of supporting
2000 tonnes at 8m above the dock floor.
Due to the ship have a significant folding stern
tower, it was deemed necessary by the owners that the stern should
be supported by a dedicated frame capably of such support.
The ship had never previously been docked with the
stern tower installed.
She was again docked in Cape Town in June
2010, using the same concept, but a rebuilt stern docking
frame. This frame was also due to be stress monitored "live"
during the docking process, using submerged strain gauging, installed
on the frame, ahead of flooding the dock, all conducted under subcontract
by Origen (Hout Bay).
For more detail, click here:
VARIOUS MOORING ANALYSIS
Non-linear dynamic (time domain) mooring analysis
were performed on a number of Oil Rigs and FPSO's as listed below.
F.P.S.O. Glas Dowr (2003)
Semi Sub - South Seas Driller (Pride South Seas)
Semi Sub - Gavea Lifter / Sedco 709
F.P.S.O Dalia
Semi Sub - Orca
Semi Sub - Atlantic Venture
Semi Sub - Transocean Richardson
Semi Sub - Scarabeo
FPSO - Glas Dowr (2009)
Semi Sub - Sedex 701 (2009)
Jack Up - Hercules 185 (2009)
Semi Sub - Transocean Celtic Sea 2011
These were all analysed for static moorings for extended
periods of stay in Cape Town, Walvis Bay, or Saldanha Bay and assumed
10yr return wind and gust speeds, or other applicable client supplied
data. These time based analysis would then predict peak line tensions,
bollard reactions, fender reactions and displacements off and along
the quay. Single line failure analysis would also be performed, as
required by the various approval authorities.
Triton Naval Architects
No. 8 Foregate Square,
Harbour Rd
Foreshore, Cape Town, SOUTH AFRICA
Tel: +27 21 418 2090 | Fax:
+27 21 425 2722 | Email: triton@triton.co.za
By Triton Naval Architects
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Triton
Naval Architects
