dieselfacts_2015-3

Continued from front page

MAN

Diesel & Turbo sees sig-

...to implement a pilot conversion

nificant

opportunities arising for

on Q-Max Rasheeda, the first ret-

gas-fuelled tonnage as fuel prices

rofit ME-GI project ever to be im-

rise and modern exhaust-emission

This is a milestone moment for all

dicates that the ME-GI engine de-

involved parties.”

livers significant reductions in CO2,

MAN Diesel & Turbo reports

NOX and SO x emissions. Further-

that the vessel’s ME-GI units have

more, the ME-GI engine’s negligi-

displayed a seamless change be-

ble methane slip makes it the most

tween fuel-oil and gas operation –

environmentally friendly technol-

a key characteristic of the ME-GI

ogy available. As such, the ME-GI

technology.

engine represents a highly efficient,

The Qatar fleet comprises 14 Q-

flexible, propulsion-plant solution.

Max and 31 Q-Flex LNG carriers,

An ME-LGI counterpart that

all using dual MAN Diesel Turbo’s

uses LPG, methanol and other liq-

S70-ME-C low-speed diesel en-

uid gasses is also available and

gines for propulsion.

has already been ordered.

The ME-GI engine

About Nakilat

The ME-GI engine represents the

Nakilat is a Qatari LNG transport

culmination of many years of work,

company providing an essential

and gives ship owners and oper-

transportation link in the State of

ators the option of utilising fuel or

Qatar’s LNG supply chain. Its LNG

gas depending on relative price

shipping fleet is the largest in the

and availability, as well as environ-

world, comprising 63 LNG vessels.

mental considerations. The ME-GI

Nakilat also manages and oper-

uses high-pressure gas injection,

ates four large LPG carriers via two

allowing it to maintain the numer-

strategic joint ventures: N-KOM

ous positive attributes of MAN

and NDSQ. Nakilat operates the

B&W low-speed engines, which

ship repair and construction facili-

have made them the default choice

ties at Erhama Bin Jaber Al Jalah-

of the maritime community. The

ma Shipyard in Ras Laffan Indus-

ME-GI is not affected by the mul-

trial City. Nakilat also offers a full

tiple deratings, fuel-quality adjust-

range of marine support services

ments or large methane-slip issues,

to all those vessels operating in

which have been seen with other

Qatari waters.

dual-fuel solutions.

adopt our dual-fuel technology.”

vices as well as the development

respect, the Wes Amelie has 23

Wessels has earlier stated that

costs, reducing significantly the

sister ships, 16 of them structurally

the project will promote the de-

costs for follow-up projects. In this

identical, which would allow follow-

mand for LNG as a fuel within the

maritime industry where Wessels

Reederei GM, Christian Hoepfner,

said: “With each rebuild, we are

creating an increasing demand for

LNG as a clean fuel. Only in this

way – and not only through ap-

peals – can the development of an

LNG infrastructure continue to gain

momentum.”

Due to the long delivery time of

LNG tanks, the engine retrofit will

commence in Q4 2016. Full op-

erational usage of LNG as fuel is

planned for early December, 2016.

Multiplier effect

The Wes Amelie is a modern feed-

er-vessel that was launched in

2011 and operates in the North

Pictured at the signing at Europort were (front, left to right) Dr Thomas Spindler

and Baltic Seas. When selecting

(Head of Upgrades & Retrofits, MAN PrimeServ Four-Stroke) and Christian

a suitable vessel for conversion,

Hoepfner (Wessels Reederei GM); (back, left to right) Marcel Lodder (Project

special attention was paid to the

Engineer, Upgrade & Retrofit, MAN PrimeServ), Stefan Eefting (Vice President,

MAN PrimeServ), Rainer Runde (Project Manager, Wessels Reederei), and Gerd

scalability of the engineering ser-

Wessels (Managing Partner – Wessels Reederei)

one of the most powerful pelagic-

Atlantic in an area known for its

fishing vessels in the world with a

challenging weather, a primary

bollard pull of more than 120 tons

reason behind the owner ordering

and commented on its very high

such a powerful engine.

efficiency when comparing the bol-

The Voyager will replace the

lard pull with the size/power of the

existing 75.6-metre vessel of the

engine.

same name that Karstensens built

Carstens continued: “The en-

in 2010, and represents the largest

gine has gained a good foothold

vessel built at the shipyard to date.

in the market for its flexibility, low

Upon completion, the 86.4-metre

levels of noise/vibration, reduced

fishing vessel will have a loading

smoke during engine start and

capacity of more than 3,200 m3.

operation, and is already building

Notably, when comparing the two

a reputation as an excellent work-

vessels, the newer model’s larger,

horse.” He concluded: “We are

optimised propeller has meant that

also very pleased with how well

the shipowner has been able to

the common-rail system has per-

employ a smaller engine, despite

formed in this key segment.”

the larger size of the newbuilding.

A powerful engine

MAN Diesel & Turbo reports that

the Voyager order is just the latest in

MAN Diesel & Turbo reports

a string of orders the company has

that this order is its first for a

landed in the fishing segment for

12V32/44CR type with a power

the 32/44CR engine. These include

rating of 7,200 kW, making it the

orders for European tuna boats,

hitherto most powerful model the

and North American and Scan-

company has delivered to the pe-

dinavian trawlers, of which two of

lagic fishery market. The new Voy-

the latter have been delivered by

ager will catch fish in the North

Karstensens already this year.

Beneficial propulsion

to 60 Hz). This, in turn, provides

optimisation

the highest efficiency in all opera-

The two-speed RENK gearbox of-

tion modes, ensuring a reduction

fers both economic and environ-

in fuel consumption of up to 20%,

mental benefits, particularly for

depending on the vessel’s opera-

fishing vessels and other vessels

tion profile.

having a multiple operational pro-

Furthermore, cavitation and

file or reduced transit speed.

noise are reduced when operat-

As a result of the vessel’s float-

ing at low propeller rpm, which

ing frequency system (from 50 to

improves the vessel’s fishing ca-

60 Hz), the propulsion system is

pabilities.

also able to operate in ‘shaft alter-

Boost injection

nator mode’ with reduced engine

and propeller speed in both steps.

The MAN 32/44CR engine also

With this part-load optimisation

boasts of a special, patented

feature, offering up to 16.7% low-

feature for common-rail engines,

er engine/propeller speed in both

called boost injection. SaCoSone,

steps, the fuel consumption is fur-

the engine’s safety and control

ther reduced.

system, is able to detect a load in-

The gear box features two gear-

crease at an early stage and im-

ratio settings, which facilitate a re-

prove the load response of the en-

duced propeller speed at an opti-

gine significantly by activation of a

mal engine speed. This allows the

boost injection in the common-rail

electric power generation for the

control.

PTO on the gearbox to remain un-

If an engine detects a sudden

interrupted in both trawling and

load increase, it changes the in-

transit modes in combination with

jection timing and increases the

the floating frequency (from 50

rail pressure by about 200 bar.

This change leads to higher engine

Principal details – Voyager

torque, a reduced speed-drop, a

Length overall (m)

86.4

short recovery time, and no addi-

Breadth (m)

17.8

tional air consumption.

Depth (m)

10.3

Alphatronic 3000 control system

Main engine

1 × MAN 12V32/44CR (7,200 kW)

The propulsion control system

Propeller plant ø (mm)

4,400

specified for the Voyager is MAN

Shaft alternator (kW)

3,500

Diesel & Turbo’s new and ad-

Thrusters (kW)

1 × 1,400

vanced Alphatronic 3000 genera-

Gearbox

Two-speed RENK – Type RSVL1000

tion. The installation will be config-

ured for complete control station

Propeller

4.4-m MAN Alpha propeller, incl. AHT nozzle

set-ups at the main bridge, the

AT3000 remote control system with

starboard and port indoor bridge

Control system

two-speed gear selection

wings, aft bridge and the engine

Source: MAN Diesel & Turbo

control room. As a special feature

for optimised operational economy,

the control system is specified with

and in full operation.

fuel-consumption savings and low-

two-speed gear selection – in ad-

An optimised aft-ship solution

er exhaust-gas emissions. The fine

dition to the load control for floating

tuning of the final propeller-blade

frequency operation.

The high-efficiency (Alpha High

design has been based on a care-

The MAN Alpha remote con-

Thrust) AHT propeller nozzle has

ful assessment of the Voyager’s

trol system AT3000 is highly user-

been specified in this case for

predicted operational power/

friendly and intuitive with the ability

‘headbox’ mounting. The optimi-

speed/duration profiles, while tak-

to switch between the two speeds

sation and integration of the large

ing onto consideration the com-

ensuring that the vessel always op-

propeller and nozzle into the ves-

promises involved in finding the

erates with the highest possible ef-

sel’s aft-ship design was carried

perfect design solution for, for ex-

ficiency. MAN handles all interfac-

out in close cooperation with Salt

ample, high-speed steaming and

es to clutch control, PMS, etc.

Ship Design.

maximum pulling power efficiency

Additionally, the propeller speed

A propellerand propulsion-op-

at trawling speed with suppression

change is performed automatically

timised aft-ship solution delivers

of cavitation and noise.

with the shaft alternator engaged

energy optimisation,

resulting in

Instead, MAN uses an electrical

within the designated limits, the

conductivity test where the com-

compressor wheel is evaluated as

pressor wheels are evaluated by

suitable for continued operation

their “International Annealed Cop-

until the next overhaul as long as

per Standard”, known as ‘% IACS’,

individual operating instructions

that is, the electrical conductiv-

are strictly adhered to. To date, no

ity for metals and alloys relative

TCA compressor wheel has been

to a standard, annealed, copper

opened for a third major overhaul

conductor. During the production

but precedence exists in the form

phase and upon the finalisation of

of the ample service experience

each compressor wheel, its elec-

that exists for the previous-gen-

trical conductivity is measured at

eration NA series. Figures 8 and

several designated points and reg-

9 are from the service report for

istered in a database, see Figures

an NA57/T turbocharger aboard a

6 and 7.

containership after 107,000 oper-

During an overhaul, this test is

ating hours.

offered to shipowners as an op-

Conclusion

tion, especially when the expected

lifetime of a compressor wheel is

The examples we have covered in

close or already reached. In such

this article clearly show that the

a case, the same points as were

CBM concept delivers potentially

measured in production are meas-

significant savings to shipowners

ured by service engineers and

that are not automatically com-

The Turbocharger unit of MAN

Accordingly, MAN PrimeServ

MAN PrimeServ Turbocharg-

PrimeServ, MAN Diesel & Turbo’s

Turbocharger – in coordination

er monitors and administrates

service division, recently signed

with the MAN PrimeServ network

upcoming maintenance inter-

a Premium Turbocharger Mainte-

– will coordinate and plan all up-

vals

nance Contract with AMCL - Asso-

coming scheduled maintenance

Fixed prices for turbocharger

ciated Maritime Company (HKG) Ltd.

intervals for AMCL’s turbocharg-

services and spare parts

ers, including the timely delivery

Turbocharger

operational

The contract initially covers ap-

of necessary spare parts.

data constantly updated in-

proximately 36 turbochargers,

Premium Maintenance Con-

cluding the complete mainte-

installed aboard various ves-

nance history

sels from the AMCL fleet operat-

tracts

Open access to mainte-

ing worldwide. The turbocharger

With a Premium Maintenance

nance documentation, elec-

types covered by the contract

Contract, MAN Diesel & Turbo

tronic spare-parts catalogues

are essentially TCA axial types

handles all scheduled mainte-

and service reports through

for main engines, and NR radial

nance planning for the customer

PrimeServ’s

customer in-

types for auxiliary engines.

six to seven months prior to an

tranet.

MAN PrimeServ reports that its

upcoming turbocharger service.

About AMCL

global network of service centres

The customer simply confirms the

is well-placed to serve AMCL’s

upcoming service by email. Such

AMCL is a ship management

trading routes. Under the terms

contracts entail several, other

company that

is

historically

of the agreement, PrimeServ will

benefits:

linked with the Tung Group. Dur-

provide all relevant services as

Timely spare-parts planning

ing its long history, the Group was

part of a complete maintenance

that enables higher price flex-

among the first in pioneering Very

package.

ibility

Large Crude Carriers (VLCCs)

and has made numerous signifi-

est tanker fleet for the China Mer-

cant and innovative contributions

chants Group in all aspects cov-

to the development of Chinese

ering ship management,

shipping industries around the

commercial operations, corpo-

world.

rate and accounting services as

Today, AMCL is one of the lead-

well as new building supervision,

ing ship management companies

while retaining a high degree of

in Hong Kong, operating the larg-

cost efficiency.

80,000

S90ME-C10

70,000

G95ME-C9

S90ME-C9

60,000

60

70

80

90

100 r/min

Engine/propeller speed at SMCR

PrimeServ Diesel, said: “This tur-

spective. In the end it’s an invest-

vative in the world. Thus we are

bocharger upgrade will not only

ment in sustainability.”

always eager to explore new solu-

boost engine performance but

Gregory Purdy, Senior Vice Pres-

tions to increase their performance.

also extend engine life and sup-

ident, Marine Operations, Royal

We put high expectations in this

port the entire operation both from

Caribbean International, said: “Our

turbocharger upgrade.”

a technical as well as a cost per-

ships are the best and most inno-

“Our fleet has an outstanding