Wind Solution

K-Sail: Harnessing wind to boost Maritime efficiency

Smarter sailing through integrated wind propulsion and control systems

A new standard in wind integration

More than sails — a full system rethink. K-Sail builds on the established value of wind propulsion—by making it more operationally seamless. From route planning to system controls, K-Sail transforms wind into a fully manageable energy source that aligns with real-world commercial demands.

K-Sail at a glance

K-Sail is a modular wind propulsion platform engineered for both newbuilds and retrofits. It integrates sail management, vessel automation, and route optimisation into a unified ecosystem—giving operators full control of wind-assisted performance without added complexity.


Propulsion & steering CPP will give better efficiency dueto large variation in trust conditionfor propeller Feathering CPP offer lower drag forfully sailing vessels Rudder dimensions for sufficientside force generation Additional appendages (stabilisers, keels, daggerboards, …)	Machinery Electric propulsion or PTO/PTI Battery for harvesting of energy savings Charging of battery through hydrogeneration from propeller	Optimisation KONGSBERG analysis and advice on wind device based on vessel type and operating area device based on operation area and route Propeller, steering, wind-assist treated as one propulsion and steering system Voyage optimisation tool onboard Intelligent energy management system (iEMS) Hull form and appendage design

Whether you're optimising long-haul commercial routes or retrofitting for compliance in wind-rich regions, K-Sail offers the flexibility and integration needed to deliver consistent performance across your fleet.

Compatible vessel types:	Proven deployment regions:
Bulk Carriers Tankers Container Ships RoRo Vessels Cruise Ships Large Yachts	Europe West Africa North Sea Brazil Gulf of Mexico

How it works: Orchestrated efficiency

Full-system coordination in real time. From voyage planning to propulsion and steering alignment, K-Sail acts as the system conductor—ensuring that sail-assisted propulsion works in sync with your vessel’s needs. The result: smoother operations, measurable savings, and easier compliance tracking.

Key components - Designed for seamless control and clarity

WAPS integration for basic functionality:

K-Sail CORE: Sail interface through K-Chief

Voyage planning:

K-Sail VOYAGE: Fuel- and wind-optimised routing

Propulsion & steering syncronisation:

K-Sail PROP: Propulsion and sail coordination
K-Sail STEER: Sail-aware rudder alignment
K-Sail PILOT: Smart course correction via M100 autopilot

Energy oversight:

K-Sail ENERGY: Total energy control and monitoring via iEMS

Operational gains: Who benefits and how

Owners: Lower fuel costs, stronger asset value
Operators: Less manual input, smoother voyages
Compliance Teams: Easier environmental reporting
Sustainability Leads: Trackable emissions reductions
Fleet Managers: Simplified integration, scalable across vessel classes
Technical Leads: Centralised system insight, reduced maintenance complexity

What sets K-Sail apart: Built for results, not just compliance

Increase WAPS savings with up to 50% on suitable routes and sail installations
Return on investment significantly reduced
IMO and CII regulation alignment built-in
Plug-and-play with multiple sail technologies
Centralised control architecture—fewer systems, more insight

Proven in practice: Real-world energy savings with K-Sail

Case study: 15 000 DWT chemical tanker

Savings EEDI	Global routes	Porvoo - Kokkola	Kokkola – Porvoo
Propulsion savings [kW]	259	260	266
WAPS power usage [kW]	53	53	48
EEDI Net savings %	9%	9%	9%
K-Sail Net savings %	15%	15%	15%

Case study: 82 000 DWT Dry Bulk ship

Savings EEDI	Global routes	Rotterdam – Sept-Îles	Sept-Îles - Rotterdam
Propulsion savings [kW]	1290	1883	2328
WAPS power usage [kW]	180	236	239
EEDI Net savings %	20%	29%	36%
K-Sail Net savings %	25%	38%	48%

To discuss these real-life examples in more detail, or to explore how you can achieve significant savings from K-Sail get in touch with one of our experts >

Technical requirements: Integration made clear

K-Sail module	Required systems
CORE, ENERGY	K-Chief
PILOT	Autopilot M100
PROP	AutoChief or CANMAN - additional benefits with controllable pitch propeller
STEER	K-Steering