Workboats & Sub IMO Vessels

Sub IMOXALT® Energy is providing battery power solutions for workboats and professional vessels in the Sub IMO/Sub 24 meter sector.

The Future Is Now

In 2015 two significant developments are going to make many operators, owners and builders of professional vessels consider hybrid marine power. Firstly, the new emissions laws aimed at reducing pollution in ports and secondly, the next generation of highly-efficient lithium ion batteries.

Working with Marine Professionals

XALT® Energy is analyzing duty cycles and engine management programs to identify the most efficient electric and hybrid solutions for each vessel. Some duty cycles are suitable for complete electric battery systems. Other duty cycles lend themselves to hybrid diesel electric solutions.

Serial & Parallel Hybrid Power Systems

A serial hybrid is where the engine in the system only powers a generator and is not mechanically connected to the propeller shaft. A parallel hybrid is where the engine is mechanically connected along with an electric 'machine' that can operate as both propulsion motor and generator.

Hybrid Electric Charging & Switching

In the workboat sector there is already a charging infrastructure with dockside power. Hybrid diesel/electric vessels will use their main engines when running on mid to full power, then switch to battery powered electric drives in port when operating at lower speeds or loitering.

Sub IMO Vessel Types

Wind Farm

Wind Farm Support

Wind Farm Service Vessels (WFSV) have relatively consistent duty cycles. In the maintenance phase they often run seven days a week to drop off or collect technicians. Identifying the viability of hybrid diesel/electric battery power for offshore wind farm support vessels is a project that links green energy onboard with renewable energy from the environment.

Pilot Boats

Pilot Boats

Pilot boats are critical to every port in the world. These vessels are often required to run multiple daily transits to drop off or collect Maritime Pilots. Running out of or into port within a harbor speed limit, usually 10 knots or less, could be part of the electric drive cycle. Waiting on station at sea could utilize battery power and save diesel engines from wear at low speeds.

Tugboats

Tugboats

Tugboats operating in harbors can utilize hybrid diesel/electric battery power as part of Air Quality Improvement Programs (AQIP). Emission baselines can be identified and quantified by data logging. Modifying harbor tugboats with a hybrid propulsion system can improve bollard pull and reduce fuel consumption when vessels are idle or moving at low speed.

Ferries

Ferries

Ferry duty cycles are predictable and repetitive. For new builds the decision is whether to go for all electric or a diesel/electric hybrid system. A ferry operating over a short route with a long stopover at each end could offer the perfect work cycle for ‘electric only’ with a land-based battery charging system. Ferries running over greater distances may use diesel for part of the passage.

Workboats

Workboats

XALT® Energy works with boat builders, naval architects and marine operators to analyze different workboat duty cycles. Engine management data can be matched to battery characteristics to develop the most efficient solutions. Onboard energy management systems ensure the battery system operates at the optimum charge rates and audits the results.

Fish Farm Support

Fish Farm Support

Fish farm support craft include tugs, workboats and landing craft designs. These working platforms spend long periods idle when working with fish stocks. Switching over to battery power reduces fuel costs and reduces pollution of both water and air. Battery systems reduce disturbance of the waters and silent running reduces the effect of aquaculture on the environment.

Unmanned Vessels

Unmanned Vessels

Unmanned surface vessels require simple and robust systems which enable them to stay on station for long periods. In patrolling or monitoring roles, the vessel can use battery power to remain in position and to run onboard electronic devices. Engines can be run periodically to charge batteries with onboard energy management systems reporting back to the operator.

The Power is in Your Hands

To learn how XALT® Energy can help power your innovation, contact us to talk about your specific needs.