Logo
X
X
23.01.2020

The world's first Advanced Variable Drive (AVD)...

On the 11th of January 2020 Sanmar and Robert Allan Ltd. celebrated the commissioning of the 200th tug built by Sanmar to a Robert Allan Ltd. design.  Achieving this milestone in just over 25 years is remarkable, and a true testament to the close working relationship developed by these two prominent businesses in the international tug market.  The success of Sanmar in rising to such prominence in the world tug market reflects their unwavering commitment to the highest standards of modern shipbuilding, resulting in tugs of the highest quality available anywhere in the world.  This achievement also reflects the fact that they are building well-researched designs of the highest quality from Robert Allan Ltd., a world-leading designer in this demanding sector.  A private ceremony between the two organizations will be held early in the New Year to mark this special occasion.

The 200th tug is itself a reflection of the desire of both companies to continue to move the goalposts for advanced tug designs.  The Boğaçay XXXVIII is the latest evolution of the highly successful RAmparts 2400-SX design, incorporating the newly developed CAT Advanced Variable DriveTM (AVDTM) hydro-mechanical hybrid propulsion system.  At the time of writing the tug is joining Sanmar’s towage fleet in Izmit Bay, Türkiye.

Boğaçay XXXVIII has been painted with a bright green hull and colorful flowers on the deckhouse inspired by the famous pop artist Andy Warhol’s “Flowers” print.  This regalia, reflective of the changing trend towards reduced environmental impact from tugs is bound to attract much attention in the usually moribund world of tugboat aesthetics!

The particulars of this new tug are as follows:

  • Length overall: 24.40 m
  • Beam, moulded: 11.25 m
  • Depth, moulded: 4.38 m
  • Draft Extreme: 5.42 m

The vessel is classed by ABS with the notation:

✠ A1, TOWING VESSEL, ✠ AMS, ✠ ABCU, UWILD, QR, UNRESTRICTED SERVICE,

BP (70 tonnes)

Tank capacities are:

  • Fuel oil: 72.4 m3
  • Fresh water: 10.8 m3
  • Fi-Fi foam: 6.6 m3

The CAT AVD TM system consists of a pair of dual input, continuously variable transmissions, located in the shaftlines between the main engines and the Z-drives.  The AVDs can accept power from the CAT 3512 main engines, rated 1765 kW at 1800 rpm and/or from two 435 kW hydraulic motors powered by a single CAT C32 auxiliary engine rated 1081 kW at 2100 rpm.  The power is delivered to two CAT MTA 627 FP Z-drive units with 2.7 metre diameter fixed pitch propellers.

A primary advantage of the CAT AVD TM system is the continuously variable transmission which can modulate propeller speed down to 0 rpm like a slipping clutch.  It can also spin the propeller up faster than would be possible if the engine was directly coupled to the drive, allowing the engines to operate in their peak efficiency zone instead of operating along the propeller demand curve at higher specific fuel oil consumption, thus resulting in significant fuel savings.  With a FP propeller pitched for bollard condition at 0 knots, this feature enables full power to be taken from the engine when free running, much like a CP or DEP system.

In the words of Nathan Kelly, Caterpillar Marine Product Definition Engineer:

“This (AVD system) allows propeller speed independent of engine speed so optimal engine efficiency can be achieved leading to fuel savings of fifteen to twenty percent. Basically, all the benefits of a variable speed Diesel Electric Propulsion (DEP) system at a fraction of the cost and size.”

Other advantages include improved response and acceleration as well as lower overall maintenance costs due to significantly reduced operating hours on the main engines.

It is noteworthy that with this system the engines are smaller than would normally be the case in a tug of this power (3512 vs. 3516 engines).  The additional power to achieve maximum bollard pull comes from the C32 engine that also drives the Fi-Fi pump.  The machinery configuration and power flow scenarios for the four operating modes are illustrated below:

The towing gear consists of:

  • DMT Type TW-E 250KN electric double drum hawser winch with a pull of 250 kN at 0 – 9 metres/minute on low speed and 80 kN at 0 – 28 metres/minute on high speed
  • Data Hidrolik tow hook
  • Data Hidrolik 5 tonne aft capstan

The vessel has been outfitted to Sanmar’s usual very high standards for a crew of six people. The main deckhouse contains the galley, mess, two officer cabins, and a common WC. The lower deck contains two double berth cabins, a laundry, galley stores, and a common WC space. The wheelhouse provides all round maximum visibility and exceptional visibility to the bow and side fendering. The engine room features a small, sound resistant switchboard room.

On trials, Boğaçay XXXVIII achieved 70.35 tonnes bollard pull and a free running speed of 13.3 knots.

The commissioning ceremony, which was held at Sanmar’s Altinova shipyard, was well attended by the Turkish maritime community and Turkish politicians including the Minister of Transportation.

Sanmar’s Vice President Ali Gürün commented as follows:

“Innovation, Respect to Environment, Quality, Form, Function, Aesthetics and Art; all essential parts of this new tugboat and it describes Sanmar very well.  We are proud that this boat is joining our fleet and improving the quality and efficiency of our operations in Turkish Ports”

This “Twin Century” tug is certain to attract much attention in the tug world as Owners continue to search for viable alternatives to conventional propulsion systems which can offer high performance, improved fuel efficiency, and reductions in environmental impact.

For further information on the RAmparts 2400 designs or on the AVD system, please contact Sanmar at:  www.sanmar.com.tr</a > or Robert Allan Ltd. at:  ral.ca.

RECENT NEWS

See All News
06.03.2024

Sanmar delivers compact harbour tug to French port

01.04.2024

Another first for Sanmar on the road to decarbonisation

02.04.2024

SANMAR delivers its 300th tugboat built to Robert Allan Ltd design

03.04.2024

Sanmar’s latest high-powered heavy-duty escort tug is launched

04.04.2024

Norwegian operator holds reception for Northern Europes first fully...

05.04.2024

Sanmar delivering tug built for challenging conditions to Scottish...

10.05.2024

SANMAR holds keel-laying ceremony for revolutionary methanol-fuelled...

16.05.2024

Sanmar-built greenest tugboat fleet in world goes on parade

20.05.2024

Sanmar celebrates completing 200th project with ABS classification...

03.06.2024

Sanmar holds naming ceremony for versatile Bulgaria-bound newbuild tug

21.11.2023

Sanmar Shipyards delivered two powerful new tugs to long-term...

03.11.2023

Sanmar Delivers Compact Harbour Tug to Seychelles Ports Authority

01.12.2023

Third Sanmar-built Battery Electric Tug been delivered to HaiSea...

11.12.2023

Sanmar delivers Canada’s first LNG-powered tug to HaiSea Marine

19.12.2023

Sanmar delivers first two tugs to new customer Boluda Towage

21.12.2023

Godmother names powerful new Sanmar harbour tug after her son

27.12.2023

Two groundbreaking Sanmar electric tugs on way to join SAAM Towage...

01.01.2024

Sanmar delivers two powerful new tugs to Turkiye’s Directorate...

01.02.2024

Sanmar delivers multi-purpose tug to Turkish port in final week of...

02.02.2024

SANMAR Built Tug En Route to German Operator H. Schramm Towage

03.02.2024

SANMAR delivers third tugboat in just three months to BOLUDA TOWAGE

04.02.2024

Delivery adds to the world’s most environmentally-friendly tug fleet

05.02.2024

Two eco-friendly Sanmar ElectRA tugs arrive in Vancouver to join SAAM...

29.02.2024

Sanmar says farewell to colleague and welcomes new specialist aboard

01.03.2024

Sanmar marks milestone in project to build world’s first...

02.03.2024

Fifth Sanmar ElectRA tug arrives in Vancouver to join world’s...

03.03.2024

First electric powered emissions-free ElectRA tug for SANMAR’s own...

04.03.2024

Sanmar delivers two environmetal-friendly tugs to Rimorchiatori...

05.03.2024

Sanmar delivers 6th battery electric power tugboat to Norwegian...

02.11.2023

Two electric “Tugs of the Future” from Sanmar Shipyards undergoing...

31.10.2023

Second of Sanmar’s ground-breaking electric tugs arrives in Vancouver

01.11.2023

World’s First Remotely Operated Commercial Vessel Built by Sanmar

01.11.2023

Faith maintained in Turkish Shipyard

23.01.2020

The world's first Advanced Variable Drive (AVD)...

03.02.2020

First Sanmar Delivery to SAAM Towage

13.09.2023

Sanmar Shipyards delivered compact workhorse tug to expanding Danish...

14.08.2023

Sanmar Shipyards delivers second electric tug for greenest tugboat...

28.07.2023

TURMEPA doubled the waste collection boats in Bodrum

06.07.2023

KOTUG Canada partners with Robert Allan Ltd. and Sanmar to build two...

23.05.2023

Ground-breaking electric tug HAISEA WAMIS delivered to eco-friendly...

18.05.2023

Sanmar sponsored Fenerbahce Opet women’s volleyball team celebrate...

25.02.2020

“TURCHIA” MEETS AND GREETS “ITALIA”

13.04.2023

Sanmar Shipyards to build another eco-friendly tug for...

13.03.2023

Industry leaders gathered at the naming ceremonies for Sanmar’s five...

09.03.2020

Odin of Scapa Launched

16.01.2023

Sanmar renews sponsorship of the Turkish Rowing Federation after...

22.02.2020

COVID-19 Measures at SANMAR SHIPYARDS

02.04.2020

Bring The Boys Back Home

06.01.2023

Sanmar Tersaneleri delivered 8 tugboats in December

09.05.2020

Another First for Sanmar Enhances Services in Izmit Bay

16.05.2020

A new era dawns for Sohar Port as Svitzer takes delivery of Sanmar...

30.12.2022

Sanmar Shipyards delivers cleaner and greener tugs at end of...

29.12.2022

Four deliveries in final week rounds off good year for Sanmar...

28.11.2022

Sanmar Shipyards delivers two tugs to SMS Towage

14.06.2023

Sanmar delivers another RAmparts 2400SX ASD to Rimorchiatori Salerno

08.11.2022

SANMAR delivers third tug to operate in challenging waters around...

29.06.2020

Out with the Old, In with the New

27.10.2022

Huge interest in SANMAR’s new game-changing emissions-free electric...

13.10.2022

Sanmar Shipyards to build two electric harbour tugs for SAAM Towage

28.09.2022

SANMAR Shipyards delivers 7th tug to SAAM Towage

05.07.2020

Sanmar Adds “IYIDERE” to Its Portfolio

07.08.2020

Sanmars Sirapinar Commences Operations in Baltic Sea

31.08.2020

Another Milestone for Ornkey Island Council and Sanmar With Technical...

08.09.2020

Sanmar Brings Svitzer and Port of Sohar to Full Strength

11.09.2020

Sanmar Delivers Another Tug to Somaliland Port Authority

11.10.2023

Seaspan Returns to Sanmar for Fleet Expansion to Service Vancouver...

19.10.2020

Seychelles Ports Authority take delivery of new tug from Sanmar

22.10.2020

150th Project Built Between Sanmar and ABS

03.11.2020

Delivery Further Cements Countries’ Close Relationship

08.11.2020

Sanmar Delivers Powerful Technologically Advanced Tug to Long-term...

03.12.2020

Satisfied customer buys two more tugs from Sanmar

28.12.2020

Energy company buys ultra-modern tugboat from Sanmar

11.01.2021

Sanmar delivers 30 tugs during challenging year

19.09.2022

Sanmar Shipyards and IGUS have joined their expertise to build the...

23.01.2020

Sanmar happy to announce the free trade agreement to its customers...

19.09.2022

Sanmar Shipyards makes five deliveries in a week

19.03.2021

Sanmar Delivers Latest in Popular Compact Tug Series

01.04.2021

Sanmar signs US$33.46 million six vessel contracts with Pakistan port...

10.06.2022

Sanmar Shipyards attending IHMA Congress as part of drive towards...

02.04.2021

Sanmar sells powerful compact tug to UK port authority

01.06.2022

Sustainability increasingly important for tugboat builders and...

02.04.2021

Sanmar to deliver the 5th Robert Allan design tugboat to Italian...

12.04.2021

Sanmar delivers two line-handling pusher crafts to Scottish operator

24.05.2022

Sanmar adds another new build azimuth tractor tug to its young fleet

20.04.2021

Sanmar Delivers Second Powerful Modern Tug to Canadian Operator

27.04.2021

Sanmar Delivers the First of a Pair of Unique Ice-breaking Tugboat

29.04.2021

SANMAR Delivers High-performance Tug for SAAM’s Newly Launched...

16.05.2021

Sanmar completes second of two unique custom-designed ice-breaking...

21.05.2021

Sanmar delivering three in a row to European operators

25.05.2021

Sanmar to Build Five Technologically Advanced Tugs to Serve LNG Canada

08.06.2021

Sanmar delivers its first Tier lll tugboat to Norwegian operator

09.07.2021

Sanmar delivers high-performance VSP tugboat

30.08.2021

Operator buys second Sanmar tug to work at expanding Portuguese port

20.08.2021

SAAM again chooses SANMAR for Panama

01.11.2021

Sanmar deal will see first Tier III tugs in Italian ports

08.12.2021

Sanmar Buys Third Shipyard

14.01.2022

Sanmar Shipyards signs first contract of the New Year

05.02.2022

Sanmar Shipyards appoints three directors to drive its green agenda

02.03.2022

SAFEEN Group Reinforces Harbour Fleet with Addition of ‘SEMAIH’...

22.03.2022

Four powerful new tugs from Sanmar Shipyards arrive at Port Qasim...

08.04.2022

Sanmar sponsorship deal as Turkish rowers set their sights on Olympics

19.04.2022

Sanmar Shipyards delivers powerful harbour tug to expanding Turkish...

20.05.2022

Sanmar Shipyards delivers highly manoeuvrable and powerful tug to...