4D MarineTech is a member of Dieselman Group, specializes in providing services for Marine ECO and Decarbonization Retrofit Engineering.

4D MarineTech, service@4Dmarinetech.com, is located in Shanghai, China, takes care all the services related to marine green retrofit for worldwide shipping customers.

Mr. Ben GU (ben.gu@4Dmarinetech.com), General Manager of 4D MarineTech, ex Designing Engineer of new building shipyard, with wide experience in ship building, conversion and retrofit, leads the retrofit team.

BWTS and EGC retrofit

from 3D scanning and onsite survey, engineering designing, prefabrication, material supply, installation on board, was a very successful business since we started in 2017, earned a very positive reputation in the market.

EEXI and CII evaluation

Calculate and evaluate ship's EEXI and CII, propose the most feasible solutions for energy saving

Hydro-Dynamic Solution

Energy Saving Devices: Pre-shrouded Vanes (PSV), Hub Vortex Absorbed Fine (HVAF), Rudder Bubble (RB), High Efficient Propeller

Energy Saving in Engine Room

Electric Heater to replace Aux Boiler, LED Illumination Upgrade, Variable-Frequency Drive, Shaft Generator, Shore Power System

After Ship Hydro-Dynamic Solution comprises: Pre-Swirl Stator Vanes (PSV), Hub Vortex Absorbed Fins (HVAF), Rudder Bubble (RB) and Propeller Trimming (ProT), can be adopted individually or combined.

Pre-Swirl Stator Vanes

By incorporating both Pre-duct and Pre-stators, PSV creates a pre-swirled inflow, generate additional thrust, improve propeller efficiency, reduce flow separation, and ultimately achieve significant power savings makes it a highly valuable innovation.

Hub Vortex Absorbed Fins

HVAF break down the hub vortex, recover negative pressure, reduce torque, generate additional thrust, and minimize rotational losses showcases its effectiveness in enhancing the efficiency of marine propulsion systems.

Rudder Bubble

RB features and benefits, hub vortex dispersion, pressure restoration, and reduction in wake rotation energy loss, contribute to the overall optimization of vessel performance.

Propeller Trimming

RroT is to trim propeller blades to optimizing the hydrodynamic performance of a ship's propulsion system. This adjustment is particularly important after engine power limitation (EPL) changes and ship hydrodynamic retrofit. By fine-tuning the propeller blades, the ship can achieve optimal efficiency, ensuring safe and efficient operation under different conditions. Proper propeller trimming can enhance fuel efficiency, speed, and maneuverability, contributing to the overall performance of the vessel.

We have introduced a comprehensive range of practical energy-efficient methods and technologies that are widely employed within the maritime sector. We aim to enhance overall energy efficiency and lower operational costs and reduce carbon emissions.

Waste Heat Recovery: This technique involves capturing and utilizing waste heat from engine exhaust gases and cooling systems to generate additional power or provide heating for various onboard systems, thereby improving overall energy efficiency.

Variable Frequency Drives (VFDs): VFDs are devices that regulate the speed of electric motors, matching the power output with the actual demand. This prevents motors from running at full speed when it's not necessary, conserving energy and increasing efficiency.

Electric Heating: Installing electric heaters for heating purposes when the main engine is idle helps avoid using exhaust boilers, saving energy in the process.

LED Lighting: Replacing traditional lighting systems with energy-efficient LED lights significantly reduces electricity consumption in different parts of the ship, including the engine room, contributing to energy savings.

Shaft Power Monitor (ShaPoLi): ShaPoLi serves as an Overridable Engine Power Limiter (EPL) and also monitors the efficiency of the hull and propeller. It can indicate issues such as hull fouling in the early stages, allowing for timely maintenance and increased overall efficiency.

Shaft Generator: The Shaft Generator, positioned directly on the intermediate shaft, generates electrical power using the main engine's mechanical energy. It operates at a lower Specific Fuel Oil Consumption (SFOC) compared to traditional GenSets, leading to reduced fuel consumption and minimizing maintenance costs associated with GenSets.

   Delivery time: Two-three months if there is ready-made plan; Four-five months if without ready-made plan.