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CLIENT
SHIPBUILDER
CHARTER HIRE +
O&M
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• Blades project vertically below the ship’s hull and rotate on a
rotor casing about a vertical axis, performing an oscillatory
motion around their own axis that is superimposed on this
uniform motion.
• The oscillating movement of blade determines the magnitude
of thrust through varying the amplitude (pitch) while the fast
correlation determines the thrust direction between 0 and
360 degrees. Hence an identical thrust can be generated in
any direction.
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Kinematics of VSP
Cycloidal path of a Blade
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• Stepless Control
• Equal thrust & propulsion efficiency in all directions
• Main engines can be operated with constant or variable speed
• Service life of propeller is as long as vessel life.
• Rapid and precise thrust variation
• Additional roll stabilization of the vessel.
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• Shallow Water or Conventional Depth < 400 Meters
• Deep Water > 400 Meters and < 1500 Meters
• Ultra deep Water > 1500 Meters
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• Complex and harsh environment which requires long term investment and
commitment.
• Technical and logistical challenges
• Continuous & innovative technologies required to withstand the hostile
and harsh conditions
• Unique production challenges which requires more sophisticated
breakthrough technologies in order to achieve economically sustainable
production.
• Significant increase in drilling capacity required for deep water production
to have an impact on energy supply
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• Vessels should be equipped with better dynamic positioning
system e.g. DP3
• Safe anchor handling system requiring minimum number of
crew members in the aft deck.
• Requirement of higher bollard pull OSV’s
• Using Remote operated vehicle
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• Supply Needs
• Sub-Sea Installation
• Anchor handling
• Survey
• Construction Work
• Towing
• Well Stimulation
• Stand By Rescue
• Diving Works
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• North of Arctic area has an estimated 90 billions barrels of
undiscovered oil.
• Arctic accounts for
 13% of undiscovered oil (13.5 billions tones)
 30% of undiscovered natural gas
 20% of undiscovered natural gas liquids
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• Harsh Climate including strong winds and cold temperature
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Sensitive environment & slow recover from damages
• Unknown actual impacts.
• Potential damage to fish, birds and marine mammals through
industrial activities such as noise from seismic survey,
shipping, drilling, increased pollution and oil spill risk.
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• Services required for OSV’s operation in Arctic are as follows:
 Fire Fighting
 Oil-Combating / Oil Spill
 Escort Ice breaking Prevention
 Ice Management
 Stand by / EER (Emergency, Evacuate, Rescue)
 Towing
 Anchor handling
 Construction Assistance / Cargo Supply
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• Future fire fighter vessels shall be designed with active protection,
giving it the capability to withstand higher heat radiation loads from
external fires.
• Continuous fighting of large fires from a safe distance
• Efficient water pumping capacity and more comprehensive firefighting
equipment.
• Availability and accessibility of sufficient quantity of fuel oil for
continuous fire fighting operation with water monitors for a period of
not less than 96 hours.
• Foam-forming liquid for continuous foam production for longer
durations
• Crew operating the fire fighting systems should be well equipped and
trained.
• Efficient Maneuverability of the vessel having side thrusters and
propulsion machinery of sufficient and adequate power requirements.
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• With proper ice management, the drilling season can be extended in
some areas from a 2-3 months window to all year round, resulting in
the cost per well being substantially decreased.
• Ice management is about ice monitoring, meteorology.
• Aircraft or helicopter surveillance is used to identify critical sea ice.
The sea ice is equipped with GPS transponders reporting speed and
course.
• The demand for vessels performing ice management services varies
from 1-4 vessels for a single drilling unit depending on ice severity
(thickness and movement) and the drilling unit’s capacity to withstand
the forces from the ice.
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• In case of an emergency evacuation, there is a need for supply vessels
to be able to accommodate personnel from the affected facilities.
• The demand for standby vessels depends on distance to shore and size
of the site etc. and range from 2-5 vessels per site .
• According to Canadian law, a standby vessel is required to be within 20
minutes from the offshore installation.
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• One of the biggest threats to the environment is oil spill in ice infested
waters. In addition, there is limited knowledge regarding the impact of an oil
spill in the Arctic region.
• There are different techniques on how to contain and recover oil spills and in
some cases the low temperature may have a positive effect, since the oil
thickens in low temperatures as well as the ice can act as a natural barrier to
prevent the oil from spreading.
• Together with standby and EER services, oil spill recovery is one of the most
important services in order to guarantee social and environmental safety.
• Though important, oil spill recovery is a subordinate service and is applied in
case of an oil spill emergency but will most probably be a feature which all
Arctic supply vessels will have.
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• The cargo demand differs slightly depending on the facility, where
mud is needed to control the pressure in the well when drilling and
methanol is needed for production. To be able to supply both types of
material would therefore be an advantage, which can be satisfied if a
tank onboard a supply vessel is able to carry both materials .
• If a supply base is not established, a better solution, is to have bigger
(up to five times) supply ships, which are able to carry the necessary
supplies for the entire period, delivering directly from international
ports .
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• Regarding construction assistance services, it is difficult to specify the
requirements since they are highly dependent on the type of facility being
constructed. Different requirements constitute in the vessel being equipped
with cranes, Remote Operated Vehicles (ROV’s) and a helicopter deck if the
drilling unit does not have one . Another aspect regarding construction
assistance is that it is not needed when exploring a site, but rather when a
significant discovery is found and the field is to be developed.
• A large vessel with icebreaking capabilities constitutes a good platform for
extending it to a construction assistance vessel and vice versa .
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• Scantling of foundations and supports of towing pins shall be
based on 2 times the specified maximum static working load.
• Designing of following equipment's like anchor handling winch,
shark jaw, towing pins & stern rollers with appropriate alloys
compositions or composite materials of greater strength.
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• Used basically for supply of liquid mud, fuel oil and base oil etc. for
offshore structures like well head platforms (manned / unmanned)
FPSO’s, drilling ships etc.
• Cargo pumps shall be provided with remote shutdown devices
capable of being activated from a dedicated cargo control location
which is manned at the time of cargo transfer.
• Segregation between the cargo piping system where the cross
contamination of the supply items causes safety hazards by using
spectacle flanges etc.
• Vessels intended for transportation of liquid with flashpoint below 60
DegC shall be designed with appropriate safety measures. In the case
of supply of cement and dry mud systems, the engine room should be
as far as practicable or should be separated by steel deck and bulk
heads.
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• Energy Efficient Design Index (EEDI)
Building more energy efficient vessels, which requires less fuel consumption.
• Energy efficient operational Index (EEOI)
Emission Control
• Ship Energy management Plan (SEMP)
Optimization of Cargo handling, power requirements & Crew management etc.
• LNG Propelled OSV’s
• Using of Wind Energy in OSV
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• Fuel oil tanks protected on the sides to avoid contact in case of accident.
• Fuel used by engines is MGO, having very low sulphur content, hence
minimal pollution.
• The refrigerant used by AC plants must have at least ODP.
• Vessel with incinerator plant for burning garbage at sea.
• Vessel with sewage treatment plant for treating prior to discharge
overboard.
• Tank washing system for the mud/brine tanks. Tank washing/residue sent to
slop tank and not directly discharged overboard.
• The vessel having green passport upon delivery.
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• Propulsion efficiency devices.
• Waste Heat Recovery System
• Cold Ironing.
• Energy Savings Systems like for main sea cooling water pump : a
computerized system which controls the speed of the pump by controlling
the three way valve as per the sea water temperature.
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• Introducing new cargo pumping arrangement by submersible pump for
mud/brine/ORO operated by hydraulic power pack.
• This provides for flexible and safe power transmission for cargo pumping
system for an OSV carrying cargoes with a large variety of viscosities and
specific gravity.
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• Some of the salient features of using LNG in place of conventional
MGO are
 Up to 90% NOx reduction and 20% CO2 reduction
 Operational flexibility
 Lower Fuel Cost
 Lower Maintenance Cost
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Diversified Product Mix
India’s First World Class Ship Building & Repairs Company
dedicated to Offshore & Defence
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• Integrated shipbuilding & Offshore fabrication facility at Gujarat, India.
• Strategically located close to offshore oil fields on western cost of
India.
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• Satellite Overview
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