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Shrimp grader - Onboard and onshore shrimp grading


This Carsoe shrimp grader type CS 1014 grades from 4 up to 7 sizes, leading the small shrimp out first while the larger ones continue till the edge of the screen.

Our shrimp grading machine offers a gentle and accurate thickness grading and is available for both cold water and warm water shrimp.

The open stainless steel design facilitates daily cleaning. Our shrimp grader is equipped with automatic lubricant injectors and requires but a minimum of maintenance.

The shrimp grader can be connected to plants both on board and on shore.

How shrimp grading works


A feeding chute distributes the shrimp evenly on two oscillating screens with individually adjustable rails and the shrimp are led out at a suitable gap.

A carrier chain ensures a continuous grading process without any product accumulation. The grader is equipped with either electric or hydraulic motor on request.

A quick adjustment system for easy change to other shrimp sizes is an optional extra for you. Furthermore, you can also add equipment for collection and recirculation of processing water.


3 advantages for your production

Effective grading of shrimp



Easy cleaning

The focus in the design of the grader has been easy maintenance and cleaning. The open construction makes for optimized production hygiene through quick access to critical areas.

Gentle grading

Our shrimp grader is equipped with automatic lubricant injectors ensuring a gentle grading of the shrimp.


Cold and warm water shrimp

The Carsoe shrimp grader is designed to grade both cold and warm water shrimp of different sizes. 


Want to know more?

Contact us and let us work together to find the optimal solution for your vessel.

Søren Hansen5

Søren Hansen

Area Sales Manager - Seafood processing

+45 30 11 26 85

Leif Andersen

Senior Sales Manager

+45 40 13 81 82

Why is shrimp grading important?

Shrimp caught from the sea come in various sizes because they grow at different rates. This variation makes shrimp grading very important in the seafood industry for several reasons:

Consistency and uniformity: Shrimp grading refers to the process of sorting shrimp into categories based on their size. This categorization is crucial for both commercial selling and culinary purposes, as it ensures uniformity in the size of shrimp in a given batch. The uniformity in size ensures a uniform and precise treatment of shrimp in the processing plant, e.g. cooking and freezing, thus preserving a supreme product quality. It is essential for keeping high standards in the seafood industry.

Pricing: The price of shrimp in the market is usually influenced by their size. By grading shrimp into different sizes, it becomes possible to establish fair and appropriate prices for each size category. This way, both sellers and buyers know they're getting a good deal.

Consumer satisfaction: People buying shrimp usually have a specific size in mind. Grading makes sure customers get shrimp that meet their expectations in size and appearance, leading to happier customers.

Benefits of automated shrimp grading

Incorporating a shrimp grader into your onshore or onboard processing facility can streamline and enhance your production activities, leading to a range of significant benefits:

Efficiency and speed: Automated systems can process large volumes of shrimp much faster than manual sorting. As a result, processing times are greatly reduced, and overall production throughput is increased. 

Labor cost savings: By implementing an automatic grading process, shrimp graders reduce the reliance on manual labor for sorting and grading tasks. This leads to significant labor cost savings over time. Businesses can allocate their labor force to more skilled and valuable tasks, improving overall efficiency and profitability. 

Minimized product waste: Shrimp grader is equipped with advanced technology to ensure accurate grading. This precision means that shrimp are sorted more accurately according to their characteristics. As a result, there is a reduction in the amount of substandard or misclassified shrimp, which helps minimize product wastage.

Improved hygiene and safety: Automated systems can help maintain better hygiene as they minimize human contact with the shrimp. This is important for food safety. Also, it reduces the risk of injuries associated with repetitive manual tasks.

Solutions from Carsoe for complete shrimp processing lines

At Carsoe, our proficiency in both land-based and onboard seafood processing has driven the creation of all-encompassing systems. We offer sophisticated, automated solutions for onboard shrimp processing lines, including a By-Catch Separator, an efficient grading line, a continuous cooking line, IQF Tunnel Freezers, Automatic Horizontal Plate Freezers, and a fully equipped packing area. Our setup also features automated handling systems and pallet elevators, ensuring a smooth workflow across different processing stages. 

Whether your needs encompass an advanced shrimp grader, a complete shrimp processing plant, or specific systems for other seafood types, such as onboard crab processing, we are prepared to meet your requirements. Our dedication to innovation, quality, and client satisfaction ensures a partnership aimed at boosting your operational efficiency and productivity. Choose Carsoe for solutions that not only meet but lead the industry’s evolving demands with our tailored and innovative systems.


What is the working principle of a shrimp grading machine?

As the shrimp pass through the grader, smaller ones fall through smaller gaps while larger ones continue until they reach a gap that fits their size. This process effectively categorizes the shrimp into different size classes. Each size is transported to further individual processing.

What is the standard grading system for shrimp?

The shrimp rating system is defined by the count of shrimp per kilogram or per pound, a standard applied to both headless and peeled varieties. This count-based classification is widely recognized and utilized in international trade.

Can shrimp grading affect the quality of shrimp?

While grading primarily focuses on size, it can indirectly affect quality. Properly graded shrimp ensure a uniform cooking experience, which is crucial for maintaining optimal texture and flavor.