Vessel of the year 2018

Maersk Master: Vessel of the year 2018


Maersk Supply Service ´s vessel Maersk Master has been awarded Vessel of the year at the annual Offshore Support Journal Conference in London.
She is equipped with two PTI propulsion motors (Power Take In), five thruster motors and powered by five medium speed main generators from Alconza Berango S.L providing high reliability, fuel economy and dynamic position class 2.

The challenge was to design and build customized motors and generators due to the special requirements of the project. The solution was to develop special design criteria concerning the structural aspect taking also into consideration the interface with the rest of the equipments inside the engine and thruster rooms.  

The vessels will support Quadrant Energy’s Phoenix South and Van Gogh drilling campaign, which will initially cover three wells for a duration of 150 to 200 days. This highly modern and efficient vessel will be supporting Transocean’s semisubmersible rig DD1 with supply and anchor handling duties throughout the campaign.


Maersk Master


Norwegian Gannet

Alconza will supply the electric propulsion system of the first of its kind hybrid vessel destined for aquaculture

Norwegian Gannet, will be the first hybrid vessel dedicated to aquaculture.

We are talking about a Factory-Ship, a new concept in the sector that seeks to reduce operating costs and above all to minimize the environmental impact.

Hav Line commissioned the design of the vessel and the manufacture of the engines to Wärtsilä, which will supply to Balenciaga shipyard with an integrated solution that combines a Wärtsilä 31 10-cylinder diesel main engine together with an electric propulsion system, manufactured by Alconza, capable of providing excess power on demand by reducing fuel consumption and absorbing engine load fluctuations, thus providing high efficiency while minimizing emissions.
Each delivery of the ship is calculated, will replace the use of about 50 trailers (7,000 a year), which will significantly reduce the polluting emissions associated with the entire process.
The ship, which will be launched in the month of April, has all the conditions to be one of the ships with the most technology that has left the Basque shipyards.


Wärtsilä design features the world’s first hybrid propulsion solution for fish farming industry

Balenciaga botará en abril su primer buque impulsado por un motor híbrido

RRS Sir David Attenborough

Propulsion motors for the NERC delivered

 RRS Sir David Attenborough

Alconza is chosen again by Rolls&Royce Marine AS to design & manufacture the propulsion motors of the “RRS Sir David Attenborough” polar oceanographic icebreaker research vessel for the NERC, currently under construction at “Cammell Laird Yard” Liverpool´s Shipyard.

The vessel will operate in the arctic and Antarctic territory, being able to work during 60 continuous days in ice covered waters. In terms of design, the research vessel is the first of its kind, equipped with avant garde laboratory equipment and helideck, built in the United Kingdom.

Two propulsion lines, each one triggered by two tandem motors of 2.750kW at 140rpm, designed and fabricated by Alconza, under restrictive noise and vibration requirements, in order to commit with the SILENT-R class of DNV-GL. To reach this requirements an extensive and thorough design work has been performed, later on, validated on test bench
These motors have been satisfactory tested at Alconza´s facilities and delivered to the customer, adding a remarkable reference for Alconza.


Rolls-Royce | Enabling Polar Research – UT 851 POLAR

RRS Sir David Attenborough by Rolls-Royce

One of the most advanced polar research vessels in the world

Tamdem vs monoblock

New icebreaker for the NERC

Rolls-Royce has ordered two tandem motors of 2 x 2750KW each for polar oceanographic icebreaker research vessels. This hull will be one operation unit to be added to the current fleet of the NERC (Natural Environment Research Council), that will be built at Cammel Laird Shipyard (UK).

The vessel has very strict low noise requirements to be met, and due to this, Alconza’s motors will be in full compliance with these restrictions, with the remark that there will be rigidly mounted and directly coupled to the propeller.

In comparison with a single 5500KW motor, a tandem solution (2 x 2750KW) offers a redundancy in case of failure on one motor (50% of the power will be in use), a more optimized body dimensions, the chance to operate with two independent frequency converter feeding and the possibility of interchangeability of sleeve bearings if required.

Parallel to this solution, Alconza has delivered monoblock motors. If the tandem is defined as two motors on a common bed plate with an intermediate coupling between the two motors, the difference with the monoblock is that this one has a common bed plate and shaft, with no intermediate coupling.

Dig into the NERC page to see more detailed information of the project:

NERC new polar research vessel: Consultation on science requirements

New polar research ship for UK

Hydropower generators for the second phase of Renace Power Station

 Renace II

The fourth phase of this project will see the conversion of the private electricity generator Renace into the largest hydroelectric power station in Guatemala, with a total installed capacity of 306MW on completion of the project.

Alconza has participated in the second phase of this project, contributing to an improvement in the supply of electricity to the inhabitants of the San Pedro de Carchá municipality (Alta Verapaz), through the exploitation of the Cahabón river.

Alconza's technical team has just finalised the implementation of 4 generators of 33.76MVA power at 450rpm with 13.8KV. These generators have been designed and manufactured by the company, who are specialists in the design of hydroelectric applications. In this phase of the project, Alconza has developed a special design which boasts both low vibration levels and easy maintenance; this in turn, allows the dismantling of the axel when the turbine and machine group are both fully assembled.

Alconza seeks to reinforce its position in the hydropower market through this recent investment in the expansion of the production plant. This will allow the company to take on a greater range of machines.

More information about this: Complejo hidroelectrico Renace generara 306 megavatios