Virtual chase boat

07 Mar 2017

Taking off on ‘R1’ in Bermuda (Photo: Alex Palmer/ Land Rover BAR)

Taking off on ‘R1’ in Bermuda (Photo: Alex Palmer/ Land Rover BAR)

It’s not often that we get to mention the business of racing yachts in the pages of Maritime Journal, but the remote monitoring system being used by British America’s Cup contenders Landrover BAR, could solve problems that also exist in the commercial marine world.

The remote monitoring system known as Virtual Chase Boat (VCB)
was successfully developed, tested and put into operation at the team’s base in
Portsmouth with help from the team's Technical Innovation Group (TIG), chaired
by the management and technology consultancy PA Consulting Group.

The system allows a plethora of coaches and scientists to
observe various images and data coming from the race boat, without having to
get battered about on a real chase boat, which even in the days of 15 knot
monohull America’s Cup boats needed to go very quickly in order to see from
different angles and parts of the race course. Now that the hydrofoiling catamaran
race boats are doing over 40 knots at times, quite apart from the carbon
footprint of following a sailing boat everywhere in a high performance RIB, it
actually started to become a challenge to find the appropriate chase boat. While
being a stable enough platform for people and their equipment, a ‘real’ chase
boat has to be able to overtake or catch up with the foiling cat, which with
its hulls clear of the water, unlike a RIB, is not forced to slow down in
choppy conditions. When America’s Cup teams started developing the foiling
cats, they very quickly started to leave their chase boats struggling behind in
their almost non-existent wakes. It soon became clear it would be better for
the engineers, and for the quality of their data, to keep them in the office.

The idea of the TIG was to complement Land Rover BAR's
existing design and engineering team, by bringing together experts from outside
the marine industry to identify and apply technologies from other sectors.

Once it was operational, the team's engineers quickly came
to rely on the VCB, and thoughts turned to replicating the facility in Bermuda
once the team's sailing operations moved to the island in late 2016. If
anything, the need was even greater in Bermuda. Land Rover BAR is a British
team, with a permanent British home, and the strategy had always been to keep
the majority of the design and engineering support in Portsmouth, where they
would be relying on the Virtual Chase Boat to monitor the progress of the
sailing and testing in Bermuda.

To transfer the VCB to Bermuda two technical problems would
need to be overcome. The first was the data link ashore to the team's Bermuda
base from the America's Cup race course out on the Great Sound, and the second
was the link from Bermuda back to Portsmouth. TIG and Technology in
Sustainability Partner BT had the right technology to deliver on both counts.

The major concern for the Bermudian extension of the VCB was
that its integrity and operation should be unaffected by the influx of people
and media during the period of America's Cup racing. In Portsmouth, the fact
that the sailing water was lined on both sides by relatively densely populated
areas meant that public networks could be relied upon.

The situation in Bermuda was very different. The more
isolated piece of water and the island's relatively small population meant that
during the racing period, the spectators and media attending could be expected
to strain all the public data networks. The team couldn't afford to discover
that suddenly – right when they needed it most, the link to Bermuda had been
overwhelmed, crashing data and video delivery to Portsmouth.

It was decided that a proprietary system was required,
something that would never have to be shared, or as the jargon would have it,
an uncontended link. A contended line or data channel is a shared data channel;
most residential and many businesses use them.

The second part of the problem, from Bermuda back to the UK
was the easiest to solve, with BT providing a 45Mbps leased line back from
Bermuda to the UK. This is an uncontended, or unshared data line guaranteed to
run at the advertised rate at all times.

The section from the boat to the shore was more problematic.
The cellular network was the perfect solution technically, but the team had
already discovered during the Louis Vuitton America's Cup World Series event in
2015 that the public network didn't have the required bandwidth out in the
Great Sound.

BT researched, sourced and provided a solution – a private
cellular network, complete with mast, antenna, receivers and software;
military-grade ship-to-shore 4G LTE wireless technology. It's the kind of thing
that's supplied to the military when they need to set up their own networks in
the field. The mast, antennas and receivers were all shipped to Bermuda,
support engineers helped the team install and test them and when the boat went
sailing for the first time, everyone in Portsmouth was watching too.

"The BT Virtual Chase Boat has been a tremendous
success story for our technical team. It's brought my engineers closer to the
sailing boat than ever before, whilst at the same time reducing our carbon
footprint as a team. I'm enormously grateful to PA Consulting Group and BT for
their technical and personal support without which this would not have been
possible for us," said Richard Hopkirk, Engineering Manager at Land Rover

By Jake Frith

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