Blokland - IMS Maritime

High-standard maritime cooling & propulsion

IMS Maritime is Blokland Official Business Partner in Turkey.

Blokland Cooling Solution

Coolers

Boxcoolers
Bottom-type coolers

Heat exchangers

Heat exchangers / oilcoolers
Plate heat exchanger

Expansion tanks

Services

Repair & cleaning

Blokland Propulsion Solution

Boat type

Commercial
Pleasure

Parts

Propellers
Shaft seals
Couplings
Bearings

Blokland
The best solution for your application

Innovative cooling products for main engines, auxiliary engines and generator sets.

We have earned an excellent reputation when it comes to supporting our clients with outstanding cooling and propulsion solutions. We are not easily satisfied and go to great lengths to provide our clients with a solution that is as optimized and reliable as possible. Using all our expertise, craftmanship, high-quality machinery and the timeless effort of our dedicated employees.

Outstanding propulsion solutions for commercial vessels and pleasure crafts.

Using Blokland boxcoolers in the design of efficient cooling system, has been done during many years for different types and sizes of ime vessels and installations. Installed in the primary cooling circuit, boxcoolers obviate the need for raw water pumps, filters and piping systems and prevent the corrosion issues related to them. Over the years different types of workboats, cargo vessels, fishing boats, ferries and dredgers have been using these coolers for main engines, generators and auxiliary systems. Nowadays boxcoolers are not only used in modern fuel-saving and green fuel propulsion solutions, but are also part of the fuel saving measures.

Boxcooler applications

Boxcoolers can operate in fresh- and brackish water, seawater and in special environments. A boxcooler will be supplied as a package, complete with a steel or aluminium welding frame, avoiding the need for drilling and tapping. Boxcoolers can be supplied in many sizes and shapes, with cooling surfaces from just over 0,5 m² to more than 150 m². The depth of a boxcooler can be adjusted for shallow draft applications, while the shape can be designed to follow the curvature of a ships hull.

Boxcoolers with certificate

When required, the boxcoolers will be supplied with a test- and witness certificate from a classification societies of choice. Blokland has extensive experience with many class societies, such as: ABS, BV, DNV-GL, KR, LRS,NKK, RINA, RMRS, RRR etc.

Boxcoolers and Marine Growth

Boxcoolers are in direct contact with the water the ship sails in. The biodiversity in coastal regions and estuarine conditions can be responsible for the growth of biological fouling, also on the boxcoolers. To prevent this marine growth from obstructing the free flow of water around the coolers, so-called marine growth prevention systems can be installed. An ICAF (Impressed Current Antifouling) system provides an unattractive environment for marine fouling. Unfortunately this system generates copper ions. Blokland has, recently, invested heavily in the development of an advanced ultrasonic system (GreenSonic), which is capable of preventing a substantial amount of marine growth to settle on the coolers. Under specific conditions, especially where in coastal area’s the seabottom is disturbed by dredging operations, this ultrasound technology, might not be enough to keep boxcoolers sufficiently free from fouling. Especially for these conditions the GreenSonic hybrid system was developed, combining both technologies, with the advantage of reducing the amount of copper being dissolved, substantially.

Advantages of boxcoolers

No open raw water circulation system

No raw water pumps, filters and piping system

Reduced energy consumption

Less maintenance and corrosion issues

Less dependent of raw water conditions and contaminations

Boxcooler installation

Boxcoolers can be installed in longitudinal or transversal direction inside the seachest. To optimize natural circulation and heat-transfer boxcoolers should be installed with a minimum of 150 mm of free space between the tubes and the internals of the seachest. Boxcoolers can be removed and re-installed, when the topplate of the seachest is above the waterline, when the vessel is afloat.

Shaft seals

Shaft seals are an important parts of our propulsion system. Therefore, we are only using the best shaft seals to prevent leakage in your vessel. We are using several types of shaft seals, which depends on the lubrication of your stern tube, such as: water lubricated, grease lubricated, oil lubricated or glycol lubricated.

For water and glycol lubricated systems we are using our own AxiSeal mechanical shaft seal. The AxiSeal is maintenance free and allowed to handle axial shaft movement of ±10mm and radial shaft movement of ±2mm. We are also able to deliver a Standby Seal (emergency seal) for inspection or emergency situations. The AxiSeal is type approved by Bureau Veritas, RINA and Lloyds Register of Shipping.

We are also delivering shaft seals for oil lubricated systems or grease lubricated systems. Please contact us for our possibilities.

Propellers

We calculate, advice and supply several propellers for your specific project. We have a long experience in calculating your optimal propeller. High quality and optimal performance are part of our standard which results in optimal performance with as less noise and vibration as possible We deliver fixed pitch propellers, folding propellers and feathering propellers. Fixed pitch propellers are commonly used on Motor Yachts and commercial vessels, whereby the folding and feathering propellers are supplied to sailing yachts.

Max Prop propellers are feathering propellers and will increase the sailing speed by sailing yachts with about 15%. Max Prop propellers also have a remarkable reverse power, which is 80% greater than a comparable fixed pitch propeller. This gives the Max Prop the same propeller efficiency in reverse as in forward. The pitch is adjustable on all Max Props, which allows you to optimize the propeller pitch to achieve maximum efficiency.

Heat exchanger / Oil coolers

Blokland is leading in production and supply of Shell & Tube heat exchangers/oil coolers. These coolers are suitable for water, water-glycol mixture and various oils. The tube stacks are removable for service and maintenance. Blokland has a wide range of competitively priced heat exchangers. We have many heat exchangers in stock, which means short lead times.

Applications of heat exchangers

We supply heat exchangers for many applications, such as:

Oil cooler gearbox
Hydraulic oil cooler
Fuel cooler
Heat exchanger for diesel engines
Heat exchanger for air conditioning
Heat exchanger for heat recovery

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