Navgathi Marine Design & Constructions Pvt. Ltd.
 

Main | Current Projects | Recent Projects | Capability
Boat building Industry
Ship building Industry
  • Basic design to detailed design of FRP boats and yachts

  • Basic design to detailed design of Inland, Marine, and Harbor crafts

  • Construction of FRP boats and yachts.

  • Concept design of inland, coastal, and sea going vessels

  • Basic design & Detailed design of inland, coastal, and sea going vessels

  • Loading computer software for all vessels

Offshore Industry
Across Marine Industry
  • Jack-up barges, Offshore support vessels

  • Structural modifications - crane, helicopter landing platform, fittings

  • Stability analysis, Fatigue analysis of footing, etc

  • Hydrodynamic analysis, Motion analysis, Sea fastening calculations

  • Technical review & analysis of project

  • Statutory & Shipboard documents preparation & approval

  • FEM, FEA and CFD Analysis

  • 3D Modeling


About Us | Career | Contact Us | ©2008-2010 Navgathi Marine Design & Constructions Pvt. Ltd.

MAJOR PROJECTS
Design of a Cutter Suction Dredger
Client: A Dredger builder / operator in India

We are designing a cutter suction dredger - 15 m long, 400 BHP engine, 5-blade cutter blade, 9 m long spuds, and anchor winches for slewing. The design and dimensions were made as per a market study on the performance of existing dredgers and customer survey.

Status (Feb, 2010): Structural design and construction complete. Piping, outfitting and blade fabrication in progress.

Design of a 12 Pax Catamaran vessel
Client: A Shipyard in India

Our Client would like build a 12 passenger catamaran for transporting the guests of a luxury hotel. The boat is a non-polluting vessel and would be powered by Torqeedo electric motors. The boat is built of steel and

Status (November): Design completed. Construction in progress.

Design and Project Coordinator for Floating Hotels
Client: A major hospitality chain in India

We are a part of a design team creating a revolutionary floating villa that is uniquely different from the current efforts in the tourism industry.

Status (Feb, 2010): Prototype construction in progress

Design of a 1200 TDW Bulk Cargo Vessel
Client: Un-disclosed. A major shipping company in India

Our client has a clear mission - to build and operate a vessel that can carry bulk cargo between two minor ports and also have the flexibility to ply the National Waterways. This means that there is draught restriction (2 meters) and a length restriction (60 m). To add to that the vessel speed must be at least 8 knots with minimum power. This means that we have to optimize the hull to meet this stringent requirements. To validate the lines, we are doing a model test at IIT Madras.

This concept was made possible because of the new regulations that was issued by DG Shipping to promote domestic shipping - the ICSS [Code of Safety for Indian Coastal Ships] Code.

This vessel satisfies the requirements of this code and is classified with IRS. Once this vessel is built, she will be one of the largest vessels to ply the National waterway-III.

Status (November): Structural and machinery design key plans complete. Detailed design is in progress.

Design of two 81 TEU Container vessels
Client: Master Shipyard

Our client would like to avail of the excellent economic opportunity offered by the new ICSS Code that with modification to their current vessel under construction can operate between ports and thus increase the value of the vessel. Two of their vessels are under construction and two in the design stage.

Our mission is to enable this process by re-design the vessel (originally Inland Vessel Class) and get the IRS Classification Society approval for the same.

Status (Feb, 2010): Hull construction underway - fore and aft end construction in progress.

Design of 40 ft Hybrid Yacht
Client: Undisclosed

We are designing an electric powered yacht that is capable of cruising in the back waters. It is an LPG driven with electric motors and vessle is a low pollutant.

The yacht is designed for a family cruise with suffient furnishing and luxury. It has a fly bridge and is designed with a master bed room and public space.

Status (November): Concept design in progress.


MINOR PROJECTS
Advisor to the Kerala Inland Rules 2009
Client: Kerala Government

We were appointed as advisors to the technical committee preparing the new Inland Water Rules for Kerala State. As an advisor our role is to provide valuable inputs to the draft rules with regards to steel, FRP, and wooden vessel construction.

Status (November): Rules for Pre-publication is complete.

Design support for Floating Villas
Client: A major player in Hospitality sector

We are a part of a design team creating a revolutionary floating villa that is uniquely different from the current efforts in the tourism industry.

Status (November): Design completed. Prototype construction in progress.

Design support of a Weed harvester
Client: Kelachandra Iron & Steel Works

Along with Kelachandra, who would like to put an end to the water hyacinth problem that is affecting the backwaters of Kerala waters, we are supporting the design of an efficient, functional weed harvester.

Status (Feb, 2010): Construction completed. Testing underway


CONCEPT DESIGN
10 TEU RO-RO Container Vessel
Client: Un-disclosed. A major shipyard in India

We are working on a concept design of an inland ro-ro container vessel that can carry ten TEU on the deck on trolleys. It would be ideally suited for movement of cargo to inland ports.

Status (November): Concept design in progress

Fishing Trawler
Client: Un-disclosed.

We are working on a concept design of a 70 ft fishing trawler to provide an optimum hull form and design to get best performance for the fishing industry.

Status (November): Concept design in progress

Design of a floating Waste to Energy Plant
Client: Confidential

Our client seek our assistance in building a floating waste to energy plant that would give them the flexibility to operate it in multiple locations and reduce the installation cost.


About Us | Career | Contact Us | ©2008-2010 Navgathi Marine Design & Constructions Pvt. Ltd.
Before Project

  • Feasibility study
    Our combined experience in wide variety of vessels and backgrounds enable us to make a feasibility study of projects after making an economic analysis of the expected revenue and costs. Projects can be in boat building, shipbuilding, or in other related marine activities.

  • Preliminary GA, Costing, and Specifications
    We have the capability to make a preliminary GA (General Arrangement) quickly for initial project discussion. We can review a contract specification and even make one for marine projects. We can also assist in preparing the tender document including making project costing.

  • Conceptual Design, Preliminary Design
    We also assist our clients to develop project proposals with concept design of boat/ships. This can also be extended to making the preliminary design after one complete cycle of design.

During Project

  • Hull form generation
    With our professional knowledge, experience and skill, we can make an optimum hull form after fairing and analysis. This can include model test before finalizing the hull form. We use DELFT ship for line generation and fairing and depend on Michlet and in-house tools for resistance estimation.

  • Resistance & Powering
    Once the hull form is there we can estimate the resistance using Michlet (slender bodies) or other empirical tools (Holtrop etc. for normal ships). These can be estimated even without hull form using the in-house built tools using standard empirical formulas. Once these resistance are found, we can extend to select the engine.

  • Propeller design & drawing
    With our experience using the propeller design charts and propeller optimization tools, we can design the optimum propeller for any kind of vessel. Sometime, we may require to do a CFD analysis to obtain the wake and optimize the propeller location. After designing the propeller, we can generate its drawing for its production.

  • Model testing and analysis
    We have the skill and experience to assist the ship owner, consultants, or other interested parties to assist them in conducting the model test and analyzing the results. We have worked with the best model testing facilities in Korea to analyze testing of oil tankers.

  • Stability Analysis (Intact, Damage, Grain and other IMO criteria)
    Our skill and experience enable us to offer intact stability, damage stability, grain cargo calculation, and other IMO criteria calculations for vessels ranging from small boats to large ships. We use the powerful software, HYPET, for these calculations.

  • Class approved drawings for Hull, Outfitting, Machinery & Electrical
    Our team is capable of designing the entire structure of vessels ranging from FRP boats, steel boats, tugs, fishing vessels, barges, and other steel vessels. All relevant class approved drawings can be designed by our team. We can also generate key plans for Outfitting, Machinery & Electrical systems for class approved vessels or otherwise.

  • Modeling and analysis
    With our professional softwares, we can model the complete hull form, fittings to give a realistic view of the ship even before construction commences.

  • FEM, FEA and CFD
    We have the tools and skills to model and analyze structures (local and global analysis), fluid flow., vibrations etc. Using thee we can design optimum hatch covers, machinery foundations, other structural fittings, optimize the hull form, propeller location & design, others propulsive equipments.

  • Plan review and approval
    Our teams experience in vessel construction and operation enable us to assist our Cilent during the plan approval phase.

  • Model testing and analysis
    We have the skill and experience to assist the ship owner, consultants, or other interested parties to assist them in conducting the model test and analyzing the results. We have worked with the best model testing facilities in Korea to analyze testing of oil tankers.

After construction

  • Inclining experiment, Sea trials and other tests
    Our team can coordinate, conduct, analyze, and prepare the result for inclining experiment, sea trials, and other tests for vessels ranging from small boats to large vessels. The combined experience of our team is conducting these tests for over thirty sea going large sized vessels.

After delivery

  • Performance analysis of existing vessels
    Our team has the capability and the necessary softwares to study the performance of existing vessels with regards to its powering and other parameters related to Naval Architecture.

Existing vessels

  • Vessel conversion
    Our familiarity with the latest regulations and experience in design enable us to assist ship owners and shipyards in ship conversion process. A recent case include conversion of two 1600T Bulk Cargo Vessel from Inland Vessel to ICSS Code Vessel.

  • Operational Requirements
    Our team has the wide experience to assist the ship owner/operator to perform calculations and analysis like Sea-fastening calculations, Load analysis etc.

  • Vibrational Analysis, Condition Monitoring
    Along with TechPassion, we offer Vibration Analysis (Global and Local) and Condition Monitoring to reduce the unplanned equipment failures and reduce the need for expensive planned maintenance program.


About Us | Career | Contact Us | ©2008-2010 Navgathi Marine Design & Constructions Pvt. Ltd.

MAJOR PROJECTS
Design of a 15 Pax electric powered boat
Client: A Major Luxury Hotel Chain in India

Along with Master shipyard, we have designed and constructed one 15 Pax boat for transporting guests of a luxury hotel in Udaipur. Being environmentally conscious, our client required the propulsion system to be electric and we used two Torqeedo Cruise 2.0 model for the purpose. This is a plug and operate model.

The cruising range of the boat is two hours at full throttle and four hours at normal throttle. The boat also has all the safety features to protect against hight amperage and have means of quick charging.

Design of two 9 Pax electric powered boats
Client: A Major Luxury Hotel Chain in India

Along with Master shipyard, we have designed and constructed two 9 Pax boats for transporting guests of a luxury hotel in Udaipur. Being environmentally conscious, our client required the propulsion system to be electric and we used two Torqeedo Cruise 2.0 model for the purpose. This is a plug and operate model.

The cruising range of the boat is two hours at full throttle and four hours at normal throttle. The boat also has all the safety features to protect against hight amperage and have means of quick charging.

Design of the next generation Solar powered boats
Client: A Leading Hotel Chain

Our partner, Team Sustain, wanted to go further from the tag of engineering the largest solar powered boat in Asia to something grander and they have chosen us as the partner to design and construct the boat.

The hull form of this 10 Pax solar boat was optimized to enable efficient utilization of the solar energy.

For our first client, a leading hotel chain, we designed a 10 passenger solar powered boat to transport their guests between their two properties across the water in Kochi. The target speed wass about 5.5 knots and we achieved the same during trials.


MINOR PROJECTS
Fishing trawler propeller design
Client: Soorya International

Our client sought our assistance to design the propeller of a 70 ft fishing trawler whose engine power was increased significantly to outperform its competitors.

Status (15 Aug): Propeller design complete. Wooden Template is made and casting under progress.

Conduct Inclining experiment & Stability booklet preparation of 500 TDW Oil Tanker
Client: Master Shipyard

Our client wanted us to conduct the Inclining experiment and get an approved stability booklet for the 500 TDW Oil Tanker. For the purpose we had to get the Preliminary Stability booklet and Inclining procedure approved; then conduct the test; and prepare the Final Trim and Stability Bookelet. After that we submited this to IRS and got it approved.

MI Calculation for Torsional Vibration Analysis (TVA)
Client: Century Shipyard

For the 1600 TDW Container vessel being built by our client, the engine maker needed to calculate the dry and with entrained water the moment of interia of the shafting system (propeller, shaft, coupling).

We modeled the system and obtained the dry moment of intertia and for the entrained water calculation used the ParsonŐs estimate for B-series propeller.

Structural Fire Protection Plan for Container Vessel
Client: Century Shipyard

We assisted our client to prepare the structural fire protection plan based on SOLAS Rules for the 1600 TDW Container vessel. Based on this the vessel was constructed.

Design of hatch covers for a 1600T Container vessel plying coastal trade
Client: Trans Asian Shipping

Our client’s mission was to optimize the design and construction of their sea container vessel’s hatch cover.

Based on our research and FEM analysis we arrived at a  very economical hatch cover  design that would enable saving over 30 tons of steel (for four covers). This translates to immense saving in steel as well as reduction in operational costs at ports.

Subsequently the client modified the container carriage on the hatch cover and we strengthened the hactch cover to suit that. Based on this modification and approval from International Register of Shipping, the hatch cover was constructed.

Analysis of a 20 Pax Solar powered catamaran
Client: Team Sustain

On June 6th, Team Sustain handed to Casino Group Hotels Asia’s largest solar powered boat. Although the design speed was intended to be 6 knots, the boat was not achieving the same. We were appointed to analyze the performance and give recommendations to improve it.

We conducted a set of trials on the Kumarakom lake and measured the performance of the vessel. We compared the trial results with the theoretical performance of the boat and its propeller and made our recommendations. Since the client was very happy with our work and as an acknowledgement to that and our capability they have entrusted us with the responsibility of designing the next generation Solar powered boats.

Stability re-calculation of an Oceanographic Research Vessel
Client: Aries Marine & Engineering Services

SCI’s ship, Sagar Sampada was docked in Cochin Shipyard for repairs. Our Client Aries Marine was the project coordinator for the modifications to the roll-damping tank. For reducing the effect of rolling a separation plate is inserted at the center of the tank. Then an additional motor is fitted for pumping water from one part of the tank to the other.

A revised stability booklet was prepared for the new conditions. Addition of the plate and accessories has brought changes in Light ship weight, Draught, Free surface moment, GM and GZ.


CONCEPT DESIGNS
Conversion of a Slave Dock to a Floating Dock
Client: Un-disclosed. A major shipyard in India

Our client desire to convert their multi-functional slave dock to a sophisticated floating dock with minimum investment and loss of carrying capacity. This requires lot of optimization to identify the balance between the carrying capacity (increased buoyancy) and the added weight (Structural modification). In this case we had to ensure that the 2000 T carrying capacity with 18 m beam of the docked vessel was maintained.

In addition to stability issues there were the design of systems to ensure that the ballasting of the tanks and monitoring (using a customized loading computer software) is automatically done.

Status (November): Concept design is complete


TENDER DOCUMENTS

In addition, we have also supported our client KSINC (Kerala Shipping & Inland Navigation Corporation) in preparing tender documents for the below mentioned projects. The scope of work include preparing General Arrangement, Midship section, Project Costing, and Equipment and supplier list generation.

  • 40 Pax Tourist Vessel for Inland water
  • 6T BP Tug for Inland Water
  • Portable Cutter Suction Dredger vessel for Inland water
  • 19 m Hydrographic Survey Vessel
  • 300 T Dumb Oil Barge

About Us | Career | Contact Us | ©2008-2010 Navgathi Marine Design & Constructions Pvt. Ltd.