Towards Sustainable Clean Ship Design by Oladokun Sulaiman

1.0 Overviewdeepwater, includes a turning circle diagram as well
In human civilization to industrial from Stone Age,as tables showing time and distance to stop the
then computer to information and multimediavessel from full and half-speed.
innovative technological age, it has just been·         IMO Resolution A601 (15), which
about building and forgetting things around uswas adopted in 1987, contains recommendations
including environment. Today human sensitivity isfor ensuring maneuvering information is available
aggressively defining age as an age of sensitivityon board ship.
and for safety and environment. Every thing we·         The 1995 Seafarers’ Training,
have been building for years   during transition inCertification and Watch keeping Code, Section
those ages have been built with ignorance, oblivionA-VIII/2 part 3-1, and article 49 require the
or lack of consciousness to the environment ormaster and pilot to “exchange information
simply as a result of oblivion that they are part ofregarding navigation procedures, local conditions
us. The term “environmental issues”and the ship’s characteristics.”
usually implies one of two interpretations: 1) Wind,·         A Marine Board study assessed
waves, tides, sediment characteristics and/orthe use of numerical simulation technology to train
other environmental factors involved in Channelmariners and concluded that while modeling
design and usage, 2) Environmental protection inaccuracy is sufficient for deep-water operations;
the sense of reducing the negative impact onmodeling requires refinement to provide the
water quality or aquatic and coastal habitat quality.accuracy needed for shallow and restricted water
In the first sense of the term, all concern need tooperations.
agree that methods for predicting and reporting6.3 Ship design policy build-up -In 1971, IMO
environmental conditions have greatly improvedadopted Resolution A.209 (VII) establishing
and this should be able to give us direction as longrecommendations regarding posting maneuvering
as we are ready to connect the dots. This paper9 Regulation II-1/29.3.2 of SOLAS requires rudder
will address and give insight into the followingmovement from 35 degree on either side to 30o
questions in regard to burning flame ofon the other to occur in 28 seconds or less.
environment and impact to ship design: What isIMO approved circular MSC/Circ.389 in 1985
the current situation? ?What is the desiredestablish interim guidelines for estimating the
situation? Why is there a difference between themaneuverability -Rudder size and effectiveness,
current and the desired situation? What are theAbility to transit at slow forward speed, Propulsion
impediments to change? How can theseand propeller characteristics, Number of available
impediments be most effectively addressed?engine reversals, Adequate horsepower for
2.0 Introductioncontrol, Extra reserve rudder angle needed to
 allow for ship crabbing from wind forces or
In shipping and associated industries, shipmoored ship suction, Visibility from bridge and
protection and marine pollution are respectivelybridge arrangement, Hull form squat (trim and sink
interlink in term of safety and environment,age) characteristics and effect of bank forces on
conventionally ship safety is being deal with as itsmoorings and passing ships, Air draft, Emergency
occurrence result to environmentalanchoring ability, Amount of tow line leads and line
                            access.
                           Ship7.0 Current Ship design practice
Pollution seem to be very small, especiallyExisting design tools cannot, at least with any
considering emission, but today culmination ofdegree of reliability, be used to design a vessel
oversight regarding emission   seem to be backand ensure it will ensure environmental reliability 
- firing against us from ozone layer depletion toand  adequate maneuverability in shallow or
the incessant flooding and more seem to be onrestricted waters neither can it be use to satisfy
the way if we don’t question or cautiondemand need by clean ships . In part this is
ourselves, again, shipping is not left behind in this,because of the extreme on-linearity of hull and
in fact, it seem to be the most to get hit by nextpropulsion characteristics under these conditions. In
big environmental revolt. Pollutions is aboutgeneral, naval architects and marine engineers are
accident and accident it, about because, the latereducated and equipped with knowledge, skills, and
is the cause of the former. Sequel with this, thisdesign processes that permit continuous checking
paper will address environmental impacts to shipand balancing of constraints and design tradeoffs
design with respect to human, safety, shipof vessel capabilities as the design progresses.
reliability, channel, and maneuverability factors and The intended result of the process is the best
everything that surround us and ship. And ofdesign given the basic requirements of speed,
course ship design consideration that needs to bepayload, and endurance nor where the waste is
incorporated in the ship design and the designgoing. Focus is not placed on how the channels
process regarding these enumerated factors.and waterways are designed. Perhaps even more
 importantly, there is a general lack of
In respect to the above, current situation, will beunderstanding of the operational scenario
examined, policy, demand, mitigation and way toregarding piloting of vessels in constrained
move forward will be addressed. Emphasize onwaterways. Only recently has there been a real
importance of simulation, risk assessment ofattempt to fully integrate human operational
restricted channel and new generation or class ofpractices with vessel design. The involvement of
larger ships that coming to market including thehuman beings onboard vessels both extends and
need to introduce maritime environmentrestricts the inherent vessel maneuvering
awareness in maritime curriculum by layingcapabilities vastly complicating the necessary
emphasize to simulation of real and fictitious ships.methodology for assuring safe and efficient
Need to incorporate as much of cyberneticoperations. Taking waste issue and restricted
technology in navigational and maritime operationswaterway maneuverability as an important part
and finally actionable navigation, marineof ship design spiral would seem a necessary step
environment mitigation measure, recommendationto enabling proper tradeoffs in vessel design. The
for improving the safety of navigation andreality is that maneuverability and pollution
protection of the marine environment byprotection is still not an important consideration in
enhancing cost effective state of art sustainableship design of many merchant ships. The result is
of ship that has great controllability in extremethat design decisions that can compromise
whether and restricted water areas.environment and collision are decided in favor of
 other factors. Only with consideration of the full
Likewise, for many years, less attention has beenrange of ship and channel design and human
given to ship life cycle, material properties, andfactors relationships affecting maneuverability will
frequency matching with the environment haswe be able to produce an efficient and safe
resulted to corrosion. Also ship scraping, and whatenvironmental friendly marine transportation
happen to the environment after ship scraping,system. Now that the new issue of environment
yes a lot of recycling, but little or no attention isis around, then we have to squeeze in more stuff
given to the residual material that find their waysin the spiral.
to pollute the clean beautiful sea. Other areas of 
concern are channel design criteria ships,Table 1 – parameters s demand and impact
controllability in dredged channels, and ?shipEnvironmental parameters
maneuverability as a consideration in the DesignEnvironmental Demand
Process. All in all, preventive and controlImpact areas
incorporating sensible measures in ship design canShip design,
only optimize method and give us confidence onNeed for longer safe life cycle
our environment. Focal areas that are will needNew limit definition, Correct material selection,
revolutionary changes in ship design that will beMaterial technology, Quality control of safety and
identified in this paper are:environment
 Construction
1. Material selection to withstand structural, weight,High worker safety standards, Low energy input
economical lifecycle anticorrosion and foulingImproved hull hydrodynamic,
2. Incorporating ship simulation at early stage ofEmission
ship designMinimum pollution and emission, Minimum Sox, Nox
3. Structural scantly to withstand structuraland green house gas-Zero discharge
function, reliability, integrity, weight, economicalAdvance Close loop process on board,Waste
lifecyclerecycling equipment, Improve training
4. Incorporation maneuvering ship simulation at Scrapping
early stage of design iterationZero harmful emission
5. Incorporate new close loop environmental Beneficial disposal
disposal technology system to make new shipsOperations waste,
environmental safe.Efficient maneuverability
 Improve maneuverability
 Energy
3.0 Environmental issue – a blessing in disguiseMaximum fuel efficiency
 Engine design, use of alternative energy
The million dollar answer is that whether we startAntifouling
in order to make clean ships, the optimal choiceHarmless
we have is to design shipboard pollution controlBiocide free technology
system that will allow us to treat or process allBallast water
ship waste on board or allow us to incorporate orZero biological invasion or transfer of alien species
integrating such system in existing ship. MostSegregated ballast tanks, Improved ballast water
especially, incorporating such system in earlier shiptank design, Ballast water treatment, Ballast
design process through forming basic concept towater data base
set aside enough space on board and make theSea mammal
most of the overall design of scalable and efficient Interaction
.Yes, we need to design system that will allow usManeuverability capability
to destroyed waste on board the ship and thoseSafer ship structure design, Improve maneuvering
that not be destroyed will be treated so thatcapability, Navigation AID, misinformation,
discharge. Due to advert environmental causalityExchange, Reeducation
and impact of recent days, sensitivity has causedAccident
serious policy and more will follow, already weAble officer, Ship structure, Integrity
have deadline for some. If we don't do this now,New monitoring through port sate control
what we will see are similitude of : InconvenienceFire
of discharge regulation;More MARPOL specialHarmless 
discharge areas ;Augmentation of ConfusionHalon phase out
caused by waste signature – advert ofWave wash of High speed
floating of debris Marine craft
  
Now, considering the beneficent part of thisZero inundation and spray ashore
contemporary issue, environmentally sound ship-Moderation of hydrodynamic force
self-contained and independent of shore facilities8.0 Mitigation
for shipboard waste management will end up8.1 Shipboard and waste emission outline
reducing logistic requirement and costs.Time has–treatment and elimination - Pollution
already seen how ineconomy and inconvenience itPrevention (P2) or Pollution Control-this is
is for ships pumping liquid waste to pier sidebackbone of the thrust in achieving clean ship.
reception facilities, offload solid waste and excessPollution Prevention Use fewer environmentally
hazardous material for disposal – vessel areharmful substances and generate less waste on
astronomically being charge substantial costs byboard. Pollution Control: Increase treatment,
private contractors to disposed these generatedprocessing, or destruction of wastes on board.
wastes, beside this, who don’t like goodThe basic P2 principles follow:
names, good names is attached to beingEliminating the use of environmentally harmful
responsible, and be among the clean ship in portchemicals, such as ozone-depleting substance
state control report to IMO. With this, green ship(ODSs), toxic antifoulant hull coatings, and other
will nonetheless give the following beneficialhazardous materials, may be the best approach
business advantages to clean ships:for some potential problems.
  Fig.2-Treatment and emission
- They will be significant ship of tomorrow; theyReducing the amount of waste we generate on
will be the ship with good pride and public imageboard is often better that treating it on board: for
that will provide leadership definition to shippingexample, reducing the amount of plastics and
companies of tomorrow.other packaging materials taken aboard may
- They will be safer, environmental friendly,simplify solid and plastics-waste management?
everything around them including marineSimilarly, reducing the volume of liquid wastes
recourses will be safegenerated (such as graywater) may simplify
- They will maintain good relationship withonboard liquid-waste treatment.
legislation and environmental agencies hence1.        For the wastes and hazardous
minimizes the risk of fines and litigation.materials that cannot be prevented, we must
- Helps control operational pollution, minimizing thedevelop pollution-control strategies and
risk of an environmental incident.technologies.
- Enables companies to demonstrate a proactiveOther technical mitigation measures are:
approach to environmental protection. 
- Helps companies to gain recognition ofAntifouling
investment in pollution control technology.- Toxic approach uses other metals such copper
- Improves operational efficiency will Providesand zinc, or agrochemicals e.g. triazines
confidence that environmental risk is being- Fouling release approach use physical properties
managed effectively. High levels of environmentalof low surface energy coating cause the very
performance can create competitive advantageweak attachment of fouling organisms. E.g. silicone
Today, environmentally conscious world there isbased coating
already so mush pressure on ship-owners to- Fouling deterrence –marine organism not
minimize the impact of their operations on theknow for fouling like corals are use
environment.  And again more are coming, luckily- Mobile hull cleaning is also being use operationally
we are in an age of Innovation and development 
in this information and   technological age hasBallast water discharge
involved activities in relation to speed, safety,- On board treatment – chemical (chlorination),
reliability, miniaturization, cost, mobility andphysical treatment (Ultra violet light, heat
networking in most industries this is the poweresstreatment), filtration and cyclonic separation, shore
of human civilization, we have the technology it isbase treatment is sometime being used but not
matte of exercising more creativity witting ourcommon.
limited time to manipulate our system to in order- Operational mitigation based on information of
o come up with sustainable system.  biological difference between coastal ocean water
4.0 Why environmental issue become a hot issuewhere ballast and ballasting is done accordingly.
  
Over the last decade, each passing years hasAir emission
been augmented concerned about issue of- Sulfur reduction in bunker fuel
environment importance in design, construction,- Nitrogen reduction to choice of propulsion
operation and beneficial disposal of marine articraftsystem
.the overriding force is increasing the resources of- On board Cataleptics system like charlatanic
the planet that we live and that only a few areconverter, water injection, emulsion
renewable. This accumulated to production that- Operationally sped reduction and use of shore
has elements of long-term sustainability of thepower connection has been implemented
earth. Precipitated effect over the year has call 
for public awareness and translated into impact 
through these two main manners:8.2 Ship collision control and prevention outlines-
 Most accident are attributed to a flagrant
Commercial forces: where company that orcontrollability problem and the remain the classic
product that operate in unenvironmental friendlyimpetus necessary to make improvements to
way, people are prone to spurn the companiessafety and environmental protection, and we e
products and service, there fore having impact onneed to do more to ensure adequate vessel
company return on investment.maneuverability perhaps better matching of
 vessel, channel, and operational practices.
Regulations: public pressure on governmental andShip maneuverability as major iterative element
non-governmental organization regulation due toof design spiral-ship maneuverability is not
untold stories of disaster and impact, the public isconsidered particularly important during the design
very concerned and in need of fact that if theprocess, because Owners generally do not include
quality of life of people enjoy is to be sustained,maneuverability requirements as part of the
for them and the future generation then thedesign specification; Firm deep- and shallow
environment must be protected. conspicuousrestricted-water maneuvering standards that can
issue, expertise and finding of regulations makebe applied during the design process should be
them to go extra length on unseen issue,established.
contrasting between the two, while commercialModeling and simulation -Collection of data using
force act on hat will be forth problems.dual frequency DGPS receivers and proper
 analysis needs to be supported to enable unlocking
Ship Concept design is very important in shippingour understanding of restricted water operations.
and it account for 80 percent of failure, therefore 
compliance and making of optimal design has a 
great impact in ship whole life cycle. The impact9.0 Environmental technology
of environment in ship design is very difficult 
because of large numbers of uncertainties.9.1 Recent development coalition control work
Environmental impact hat need to be taken into-Environmental technology also become hot as
considerations in concept design can be classifiedissue of environment start burning, this might be a
into the following:start of another evolution, as environmental
 technology product will start selling good.
Construction -Energy and pollution – these 
come into picture when multidirectional thinking9.1 Recent environmental performance
give wisdom on what happen during 
transportation, mining, rolling of material that will1. 1 Ozone safe substances- 200-Ton
be used.Air-Conditioning Plant Conversion Kit -The
 CG-47and DDG-51 plants have been successfully
Operations: considering limiting life cycle of ships atconverted to the ozone-friendly refrigerant
estimate of 20 years, issues relating to theHFC-236fa conversion kit has been established by
following are equally not easy to quantify in designNSWCCD.
work, even thus a lot of research effort has 
been set on move on this, but the call of the day1. Solid waste - Solid-Waste Pulpers -The pulper
require allowable clearance and solution to be(especially the large pulper) is the machine into
given to the following: Known emission, Accidental,which you dump tremendous quantities of paper,
Ballast waste, Coating.cardboard, or food waste. The waste mixes with
 seawater to form slurry, which is then discharged
Disposal: issue of disposal that cover waste andoverboard. Studies show an immediate
emission and as well as what to do with the ship100,000-to-1 dilution when discharged into the
at the end of her life cycle.wake of a ship. Ships equipped with a pulper can
5.0 Major impact areasdispose of their paper, cardboard, and food waste
Environmental protection shall be considered ajust about anywhere and at anytime—at sea
design constraint when evaluating cost, schedule,including MARPOL areas.
and performance of systems under development 
and for product improvement of those that have1. Liquid waste - OWS and Bilge water Polishers:
been deployed. The cognizant engineer shallMany bilge cleaners the Navy uses today contain
consider the environmental impact of proposedlong-lasting emulsifying agents, which produce
actions, and a mitigation plan developed wherestable oil-in-water emulsions that shipboard OWSs
required to supports unrestricted operations bycannot effectively process.
developing, producing, installing, and managing all 
shipboard equipment, systems, and procedures to1. Shipboard Wastes and Emissions
reduce and manage shipboard wastes inTo improve the reliability of sanitary waste
compliance with existing and anticipatedsystem sewage transfer-pump suction and
environmental restrictions worldwide withoutdischarge gauges, naval research laboratory the
jeopardizing ship mission, survivability, orring-gauge isolator is adopting, Thermal
habitability.Destruction and integrated liquid discharge system,
5.1 Sequel to the above we can deduce thatthe later is a concept where ultra filtration
these major effects from ships environmentalmembrane systems would concentrate
impacts are:bilgewater, graywater, and sewage (as previously
·         Intentional and unintentionaldescribed); the clean effluents would be
discharge (oil, garbage, antifouling paint, airdischarged; and the concentrates would be
emission, on indigenous species from ballast waterevaporated/incinerated in a thermal-destruction
·         Environmental damage andsystem.
pollution due to port activities
·         Disturbance of marine 
environmental (collision and noise) 
- Emission from scraping of ships at the end of 
their life cycle 
  
Risk associated with environmental issue n ship 
and in ship designing is: 
  
1.       Accidental risk – marine accidentFig. 2 – integrated liquid discharge system
that could result to oil spills which then, end upconcept- source - NRL
degrading our environment GESAMP reported that 
400-300 thousands of oil entered the world ocean 
(GEASMP, 1993), collision with marine mammal, 
which then cause propeller injuries9.2 Recent development coalition control work - A
2.        Operational risks-socio economicnumber of promising developments that exist
impacts to marine ecology, habitat, and coastaltoday are:
infrastructures are affected though operational1.        Kutsuro Kijima showed a modeling
activities that result to oil spill, emission, ballastapproach that permitted analysis of passing
water, garbage, contamination, antifouling andsituations that would help set procedural standards
dredging activities.for safe passing.
 2.        IanDand reported on the
In addition to this according to RINA Publication,development of models for ships squat that have
the table shows typical 100 years ITH standardsshown very good accuracy over the years.
measurements of global warming potential for a3.        Larry Daggett described the advent
substance are shown in table1of dual frequency DGPS receivers and their role in
 gathering full-scale ship trial data. In addition to the
excellent horizontal accuracy of the normal DGPS
Fig. 1 - Global worming potential (GWP) of variousreceiver, these receivers provide vertical location
compound- sourcewith an accuracy measured in centimeters.
 10.0 The future
5.2    Impact -vessel, channel andThere is nothing more difficult to take in hand,
maneuverability- in the context of ship design themore perilous to conduct, or more uncertain of
impacts areas are: Shipping Trends, Channelsuccess than to take a lead in the introduction of
Design Criteria, Ship Maneuverability, Shipa new order of things because the innovation has
Controllability, and Use of Simulators in Channelfor enemies all those have done well under the old
Studies. Since world II many nations built port butconditions and lukewarm defenders in those who
forget about maintaining them while shipyardmay do well under new.
continues to build larger ships. Physical dimensionMachiavelli, the prince
and ratio of ships to channel has got impact inRecent Safety and Environmental Strategic focus
today’s ship controllability design are:on developing metrics to measure and evaluate
1. Ships’ increase ship beam expansion whereprogress. The key issues and actions are
as channel width is not, Length/beam (L/B) ratioincorporated in the clean ship concept. Ships
2.        Radius of turns and turningowner and operators must understand the need
areas-Radius of turns is directly related toto include wastes stream management in mission
navigation safety and protection of the marinerequirement in the design stages, with the goal of
environment, large rudder angles are needed toships being in compliance. Ship designer must
navigate small radius turns Rudder size;pursue technologies to reduce or eliminate waste
3.        Power/tonnage ratio;streams. The metrics use to monitor progress
4.       Minimum bare steerage speed; andtowards achieving environmentally sound ships will
Windagefocus on shipboard pollution control equipment
6. International maritime organizationinstallations, specifically the planned versus actual
 installations. Each waste stream or environmental
6.1 Policies and procedures build-up –Pollution/pollutant, equipment installations, the percentage
Emission prevention and controlof total installations completed versus the planned
International convention for the prevention ofpercentage, will be used as a measure of
pollution from ships (MARPOL) 1973, It coversprogress for that waste stream. For waste
accidental and operational oil pollution as well asstreams and contaminants for which no
pollution by chemicals, goods in packaged form,equipment has been approved or anticipated, the
sewage, garbage and air pollution I was modifiedmetric will born many R&D for necessary findings
by the protocol on of 1978 relating thereto. We must take a lead in effectively integrating
(MARPOL 73/78), MARPOL cover:o       pollution prevention and safety into the design and
Annex I- oilo        Annex II-noxious liquidlife cycle of our ships, systems, ordnance into the
chemicalso        Annex III- Harmful Goodsexecution of our processes, and into the
(package)o        Annexoperation. Managing the whole process is another
III-sewageo        Annex IV- emission andthing; environmental management can be
air pollution (Sox, Nox and green house gas,optimizing by incorporating the following concept in
emission of ozone depletion gas (ODG))our system:
New coming annex to MARPOL –Talk is going 
on passing new annex that will cover:1. Goal based , risk based and holistic design
·         Control and management ofapproach
ballast water to minimize transfer of harmful2. Total cost minimization concept,
foreign species3. Innovative safety and environmental strategy
·         Global prohibition of TBT inmanagement and integration,
antifouling coating 0- phase out scheduled forPlanning for uncertainty and risk, R(P1c) = R(E1) x
2008W(E1,P1) + R(E2) x W(E2,P1) + R(E4) x W(E4,P1)
Marine environmental protection committeeWhere: R= rating, E= environmental factor, P=
(MEPC) – IMO technical committee formingPolicy factor
subcommittee on specific issue to implement1. Probabilistic and stochastic validation
regulation towards necessary mitigation2. Education and training
International convention on oil pollution, Response 
and cooperation (OPRC)- 1990 – policy to 11.0 Conclusion - Working better by working
combating major incidents or threats of marinetogether
pollution through port state control to preventAmazingly, it seem that everything is need to be
mitigates or eliminates danger to its coastline fromintegrated in order for the world to function, this
a maritime casualty. Annex protocol under thissounds ironical, even thus the environment has
convention (HNS Protocol) covers marine pollutionnaturally integrated everything, the same apply to
by hazardous and noxious substances.maritime on issue of safety and marine
Classification societies- Classification society areenvironmental impact control and protection, it is
aggressively building service on Environmentimportant to for the main players in design 
Protection notation, and various performance(pilots, regulators, channel designers, simulator
indicator to get all concern committed to runningexperts and ship operators),and all concerned to
an environmentally sound ships.share experience Regarding differences in rules
Lloyds- Lloyds through risk assessment holisticand among regulators, about rules  that are
method has defined the following effects as cleantaken too light , sensitivity of area, degrees of
ship the benchmark standard. As Lloyd put ithazard for various ship types ,Naval architects
“These will help you gain recognition for yourand ship handlers alike should take the importance
additional investment in specific aspects ofof  importance green house and green ship issue
pollution control. Using the Rules as a frameworkand (and difficulty) of the passing maneuver
our surveyors and environmental specialists canunrestricted waters .
work with you to tailor environmental protection 
solutions to your specific needs”Environmental issue has become so sensitive
 because it is more or less of evidence that nature
Dnv -DnV has equally lunched EMBLA databasehas exercise enough patience,  impact has reach
integrated project hat will manage discharge offlash point and those who are knowledgeable
ballast water.about the behavior of matter and environment
 could sense potential of contagious chain of
European Union - Recently the union hasreaction that can lead to heavy calamity
embarked on multinational project call MARTOBdestruction and lost. Treating the issue equally
ballast waterrequired hybridizations of all the methodology we
 have been using- objectives and subjective,
Montreal Protocol -Some 110 governmentsreactive and proactive, and of course newly
attended the (9th Meeting of the Parties) of theholistic institutionalized method that compare and
Parties to the Montreal Protocol, September 1997consider trend analysis of every elements of
where several important decisions were reached,what we are dealing with.
including the tightening of restrictions on several 
destructive chemicals. 
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