/ Hull design

Hull design is about elevating the onboard experience of the vessel. We start from selecting suitable hull shape and propulsion. An important step is to evaluate this combination and its characteristics based on completed projects and theoretical knowledge. Selected hull type is then optimized through CFD simulations and hydrostatic analysis to gain best possible efficiency and comfort.

Hull types

Every boat is defined by a unique set of requirements that dictate the choice of hull type. While some boats are better suited for high-speed planing hulls, others benefit from the efficiency of slow-speed displacement forms. Thorough design of the hull shape ensures optimal performance within its designated speed range without compromising stability or manufacturability. Our extensive experience in delivering proven hull designs and our commitment to innovation ensure that each boat meets the highest standards of performance and quality.

Catamaran (multi-hull)
See more: Callboats CAT 10 L

Catamaran (multi-hull)
See more:
Callboats CAT 10 L

Catamaran (planing)
See more: OQS Tender Carbon 14

Catamaran (planing)
See more:
OQS Tender Carbon 14

Planing & RIB
See more: Boomeranger C1300 IB

Planing & RIB
See more:
Boomeranger C1300 IB

Stepped
See more: Quarken Cabin 35

Stepped
See more:
Quarken Cabin 35

Displacement
& Semi Displacement
See more: Juva e/y 30

Displacement
& Semi Displacement
See more: Juva e/y 30

Propulsion types

The selection of the propulsive system for each hull is a collaborative process with our clients. We draw upon our experience while also keeping an eye on new and emerging technologies. Our expertise enables us to simulate the precise thrust location using CFD, ensuring the vessel’s dynamic response in simulation matches real-world conditions. We provide a comprehensive analysis that accurately predicts the fuel consumption and range for any vessel,
tailored to meet specific operational needs.

Outboard

Stern drive

Direct drive

IPS drive

Pod drive

Water jet

Process

Hull form

/ 01 Functionality

Main dimensions
Weight distribution
Load carrying capacity

/ 02 Safety

Static and Dynamic Stability
Seaworthiness
Seakeeping

/ 03 Performance

Resistance
Optimization
Propulsion efficiency
Maneuverability

One of R2 Marine core competencies is hull design. We use creativity and experience to blend and balance all factors, and science to investigate, analyze and optimize all factors.

CFD Optimization

CFD (Computational Fluid Dynamics) hull optimization is a process used in naval architecture to improve the design of a ship’s hull for better performance. By simulating fluid flow around the hull using CFD, we can evaluate hydrodynamic properties such as drag and resistance. The optimization process involves adjusting hull geometry to minimize resistance, improve fuel efficiency, and enhance overall performance in various sea conditions.

Initial hull shape

Multiple iterations

Optimized hull shape

Resistance analysis

(Lower is better)

20 knots

118 kN

111 kN

Reduced by 6%

22 knots

138 kN

124 kN

Reduced by 10%

25 knots

158 kN

140 kN

Reduced by 11%

Initial

Optimized

For a 40-meter training vessel, using CFD hull optimization, we achieved significant resistance reductions across different speeds.
At 20 knots, resistance was reduced by 6%, at 22 knots by 10%, and at 25 knots by 11%. These improvements enhance the vessel's fuel efficiency and overall performance, particularly at higher speeds, demonstrating the effectiveness of CFD in optimizing hull design for various operational conditions.

For a 40-meter training vessel, using CFD hull optimization, we achieved significant resistance reductions across different speeds.

At 20 knots, resistance was reduced by 6%, at 22 knots by 10%, and at 25 knots by 11%.

These improvements enhance the vessel's fuel efficiency and overall performance, particularly at higher speeds, demonstrating the effectiveness of CFD in optimizing hull design for various operational conditions.

Hull design references

Serial production

20 - 33 ft

— Quarken 27
— Yamarin 80 DC
— Yamarin 63 BR
— Yamarin 56
— Anytec A33
— XO A8
— Ockelbo B25

35 - 45 ft

— Fjord 39 XP (XL)
— XO EXPLR 44
— Quarken 35
— Coastal Explorer 41

20 - 33 ft

— Quarken 27
— Yamarin 80 DC
— Yamarin 63 BR
— Yamarin 56
— Anytec A33
— XO A8
— Ockelbo B25

35 - 45 ft

— Fjord 39 XP (XL)
— XO EXPLR 44
— Quarken 35
— Coastal Explorer 41

Commercial production

35 - 45 ft

— Boomeranger C-1300D IB Patrol
— Boomeranger EXPEDITION A-1300D WJ
— Boomeranger C-1300D OB VIP
— Kewatec Survey 1370
— Kewatec SC M12
— Kewatec Rescue 1100
— Kewatec Work 1000
— Kewatec Work 1200
— Kewatec Patrol 1300
— Kewatec Patrol 1400
— Arctic SAR A8

45 ft +

— Kewatec SC SAR 17
— e-Work 2390 Survey
— e-Work 2360 Survey
— Kewatec Rescue 1700

35 - 45 ft

45 ft +

— Kewatec SC SAR 17
— e-Work 2390 Survey
— e-Work 2360 Survey
— Kewatec Rescue 1700

Multi-hull

14 - 20 ft

— OQS Tender Carbon 14

35 - 45 ft

— Callboats CAT 10 L
— Callboats CAT 10

70 ft +

— Kewatec Ambulance 2200
— Kewatec Ambulance 2820

14 - 20 ft

— OQS Tender Carbon 14

35 - 45 ft

— Callboats CAT 10 L
— Callboats CAT 10

70 ft +

— Kewatec Ambulance 2200
— Kewatec Ambulance 2820

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