Powertrain | Diesel International 2022-09

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#HAMILTON #FORTLAUDERDALE #DIESELENGINES
YANMAR 6LY440
HAMILTON WATERJET HJX29
Yanmar’s fourth-generation 6LY marine diesel series builds on the virtues of its
classic six-cylinder forerunners, advancing efficiency and lowering emissions.
The beating heart of the engine remains the international powerboat
racewinning compact 5.8-litre in-line six-cylinder engine (bore: 106 mm,
stroke: 110 mm) that over three decades has cemented its popularity with
boat designers, builders and owners who laud its performance, fuel efficiency,
reliability and smooth and quiet operation. This latest incarnation has taken the
engine into a new era of mechanical and digital sophistication. The fuel injection
and aspiration systems have completely re-engineered – all functions now being
managed by state-of-the-art electronic precision. The single injectors have been
replaced with a high-pressure common-rail fuel system to deliver exceptionally
finely atomised fuel to the cylinders for better power-to-weight performance,
fuel economy and smooth running. There’s also a new 24-valve cylinder
head which, with a redesigned inlet and exhaust manifold, optimises engine
breathing. All this makes the 6LY one of the most efficient, refined and easyto-live-with
marine diesel engines in the 400-500 mhp power segment on the
market today: in particular, the 6LY440 engine offers a power of 324 kW at 3300
rpm. It’s ideal not just for new-builds, but for refits too. Sharing the compact
footprint of its predecessors, it fits perfectly into engine rooms housing earlier
6LY models and other similar engines. The 6LY400/440 connects easily with
existing mechanical controls. For the ultimate in easy and precise boat control,
Yanmar offers the VC10 “fly-by-wire” vessel control system to give precision
gear changing and throttle adjustment with perfect “feel”. And with the joystick
control option as part of a fully-integrated engine and controls package, docking
is also really easy. Single- and dual-lever control heads have push-buttons for
function selection. Operations are precisely monitored on 3.5-inch robust
IP66-rated display screens with IP66 waterproof rating and with full diagnostic
capabilities plus UV-protection, anti-dazzle coating and anti-fogging ventilation.
For maximum operational security, two parallel CANbus networks separate
engine and monitoring functions. Yanmar’s J1939 control bus is dedicated to the
engine and drive control system while GPS, chart plotter and monitoring displays
are handled by NMEA2000 data bus so that, in the unlikely event of J1939
failure, the system automatically switches to a pull-out back-up panel.
line engine, the 4 th generation Yanmar
6LY-series is the ideal choice for this application,
producing impressively clean
and powerful performance. The outstanding
launch of the new Hood 35 LM
was due to the hard work of the Yanmar
personnel in partnership with the teams
at Mack Boring, Hamilton and Lyman-
Morse. We look forward to seeing the
6LY-Hamilton waterjet solution on more
pleasure boats in the years ahead.”
Backed by years of diesel innovation
and the delivery of application-driven
solutions for the recreational marine
sector, Yanmar’s engines are firmly established
as the global standard in sailboat
and small craft propulsion.
Encompassing advanced construction
technology, high-level craftsmanship,
and superior performance, “Shadow”
is equipped with some of the most
HamiltonJet launched the HJX29 in 2020 as the first model
in its new HJX waterjet series. Ben Reed, Managing Director
at HamiltonJet, says: “HJX jets will deliver 4-6% more thrust
at higher speeds than the previous HJ Series waterjets.
Despite their compact dimensions, the HJX range will be
capable of achieving speeds over 50 knots, when matched
with suitable engines and hull design. Compared to the
HJ series, HJX also achieves 15-20% more bollard pull and
greater sway thrust than the previous HJ series. HJX is
a great example of our continuing drive to design waterjets
that deliver the ultimate combination of high speed
efficiency with low speed capability.” Through a compact
inboard footprint, narrow jet spacing, low profile design
and fully integrated hydraulics and controls, the HJX series
uses space efficiently and this makes it ideal for vessels
up to 15m long (vessel dependant), particularly military
patrol, aquaculture, search and rescue and recreational
boats. HJX is compatible with a wide range of engines from
global manufacturers and is offered with a variety of control
options, including AVX – HamiltonJet’s next generation,
future-ready control option – as well as blueArrow and
mechanical-hydraulic controls.
advanced marine technology available.
The first hull offers the traditional
aesthetics and comfort of a wood hull
combined with classic Maine lines.
The Hood 35 LM follows the recent successful
collaboration between Lyman-
Morse and C.W. Hood Design, also
located in Maine, on the Hood 57 LM.
Shadow’s tech-savvy owner sought
to outfit the vessel with the latest marine
technology. She is one of the first
dayboat-sized vessels to utilize Raymarine’s
new Digital Switching System,
YachtSense. The Raymarine vessel
control system offers digital switching,
which replaces traditional mechanical
switches and circuit breakers with
digitally controlled power distribution
modules, significantly reducing the size
and length of cabling required to distribute
power throughout the boat.
“Shadow” is also the first pleasure vessel
to be equipped for autonomous running
with the state-of-the-art Sea Machines
Left. Lyman-Morse LM46
performance cruiser
series is also powered
by Yanmar.
system. Lyman-Morse is working closely
with the owner and Sea Machines to
have this boat confidently guiding herself
and her passengers in the near future.
Lyman-Morse has been busy with several
other projects in addition to the Hood
35 LM. They recently launched Hull #2
of the LM46 performance cruiser series
(also powered by Yanmar 4JH80 or
4JH110) which competed in this year’s
Newport to Bermuda Race.
Lastly, this summer Lyman-Morse
tested the Navier 27, a carbon 27’ all
electric, high performance, foiling powerboat
which will offer a range of 75
nautical miles while comfortably flying
over waves up to 4’ in height and introduces
intelligent autonomy that goes far
beyond autopilot. The Navier 27 will be
on display at the Fort Lauderdale International
Boat Show next October.
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