Capabilities
Ship Design
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Military and Paramilitary Vessels, Fishing Vessels to 45m, Expedition Ships to 75m, FPSO Structures, Shore based Gas Terminal structures, Vessel/Shore interface- Mooring Systems and Floating Links
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Ship Structures in:
Composites :
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Carbon/Kevlar /Glass/Aramid/Polyurethane, Vinyl cores
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Structural Design of Hulls and Superstructures
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Naval Craft
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NZ SAR Police Launch
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NZ Army Assault Craft
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Civil Aviation- FRP Airframe Consultants
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Aluminium:
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5th Generation Mussel harvesters*
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Passenger Vessels
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Ferries
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Fishing Vessels
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Superstructures
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Steel:
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Expedition Ships
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Offshore Dynamically Positioned Catamarans
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Cargo ShipsTrawler
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Longliners
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FPSO Superstructures​
Polyethylene:​
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Catamarans
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Runabouts
Ship Modifications
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Fishing Vessels- Superstructures, Fish handling Rooms
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Cement Carriers- Design and installation of 40 tonne crane, and container stack foundations
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RORO Passenger Ferries- 25% Lengthening, Bow Structures
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Super Yachts- +12% lengthened, new superstructure
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Project Management
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ENSCO 56 Oil Exploration Rig Refit
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Project Engineeer- Self Righting Police SAR launch
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Project Engineer- 30m Dynamic Positioning catamaran
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Ship Stability
Our personnel undertake and approve Stabilty Manuals and Books for Maritime New Zealand and Maritime Safety Queensland for non-SOLAS vessels
Our personnel have generated the stability documentation required by Lloyds Register of Shipping, Det Nosrke Veritas and MCA for vessels up to 160m
We are experienced in preparing Stability Manuals and Books to IMO and LY2 standards and for:
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RORO Passenger Ferries
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Super Yachts
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Factory Trawlers
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Naval Vessels
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Production of on-board graphics-based user-friendly Stabilty Software such as StabMaster and BargeMaster Marine Software
Ship Motions
Innovative computer aided modelling by Seaspark that is acknowleged by the ABS reviewer as producing "remarkably similar" results to those generated by LAMPS ( Large Angle Motion Prediction Software).
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Polar plots have been produced for three classes of RORO passenger ferries. These plots govern the ship's speed and heading for a series of wave heights.
SeaSpark offers to create these operational plots given the lines plan and displacement parameters
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- Floating Terminals- Based on innovative damping between ground connection and ships alongside these offer an economic solution to ship loading facilities.
Load transfer wharves where ships require deep water are expensive and can create serious environmental impact issues that can be simplified by the concept of floating terminals. Their success is based on an understanding of how the relative motions between the terminal and the its gound connection and its connection to the ship can be successfully damped, thereby extracting the wave energy.
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- Hull Motion Analysis- Determining the acceleration environment to determine equipment and structural loads.
Real time and spectral motion analysis has been carried out successfully on Naval and SOLAS vessels including RORO Passenger ferries.
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- Hull Motion On-Board Graphical Software Packages
Simple to use packages that enable on board personnel to compute cargo arrangments and accelerations for cargo limited by an acceleration environment.
Sophisticated packages are available which allow the operator to determine the trim as loads are transferred from wharf to deck checking for maximum transition angles that a multi-wheeled trailer can accommodate. Once the loading arrangement has been formulated the accelerations in different sea states can be examined at prescribed reference locations.
Finally the stability can be reviewed for seaworthiness and determining any ballasting requirements
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Structural Design
Structural Design in :
Composites :
Carbon/Kevlar /Glass/Aramid/Polyurethane Vinyl cores
Structural Design of Hulls and Superstructures
Naval Craft
NZ SAR Police Launch
NZ Army Assault Craft
Civil Aviation- FRP Airframe Consultants
Aluminium
5th Generation Mussel harvesters*
Passenger Vessels
Ferries
Fishing Vessels
Superstructures
Steel
Expedition Ships
Offshore Dynamically Positioned Catamarans
Cargo Ships
Trawlers
Longliners
FPSO Steel Modules
Polyethylene
Catamarans
Runabouts
Specifications
We have developed good resources for generating performance based and prescriptive specifications for new construction and ship modifications.
Our contract documentation is based on FIDIC international engineering practice, written in plain English, and covering all aspects that are required to have confidence in a Contractural relationship.
We undertake the management of the Tender and Construction phase: acting as Engineers to the Contract for the latter.
Consultancy
About 30% of our business relates to some form of consultancy which we define as those areas not covered by design, stability & compliance.
We have in depth experience and provide expert opinion, conduct technical and operational reviews and represent clients in their business with organisations such as Flag States and Class Societies.
Marine Software
On Board Stability Software
Approximately 25 vessels use our software, in some cases religiously every day while at sea to provide operational reports.
All data entry is via the mouse- dragging tank levels, loading different regions in the hold and making decisions on free surface.
Investigations can be carried out at sea to determine how much further time can be spent fishing while ensuring a safe and stable return voyage. Sometimes ballast has to be discharged at sea crossing into National waters and the stability implications can be fully explored.
This software takes the dust off a Stability Books and allows the operators to manage his vessel more effectively while maintaining compliance with Stability requirements.
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Trim, Stability and Acceleration Prediction Packages for Barges
Simple to use packages that enable on board personnel to compute cargo arrangments and accelerations for cargo limited by an acceleration environment.
Sophisticated packages are available which allow the operator to determine the trim as loads are transferred from wharf to deck checking for maximum transition angles that a multi-wheeled trailer can accommodate. Once the loading arrangement has been formulated the accelerations in different sea states can be examined at prescribed reference locations.
Finally the stability can be reviewed for seaworthiness and determining any ballasting requirements
Client Sea Tow http://www.pbtowage.com