MARINE PROPULSION
Nauticlean’s “DeNOx” version is a combined diesel particulate filter (DPF) and selective cat-
alytic reduction (SCR) designed, manufactured and marketed by Hug Engineering for 150 to
3000 k W marine applications. It is certified by Lloyd’s Register of Shipping and Germanischer
Lloyd for both new and retrofit applications.
ating 1916 k W and giving a top speed
of 28 knots, the Chinook is considered
to be the prototype of the “second generation” Camarc pilot boat. It is a high-speed craft able to come alongside
ships and put a pilot onboard in 12 m
breaking waves, with wind speeds
gusting up to 75 knots and self-right in
the event of a capsize.
This was also the beginning of an
entirely new specialty for Kvichak,
which has now built five Camarc boats
for American pilots on the West and
East Coasts. These craft represented the
leading edge of pilot boat design, as the
details have been continuously refined
from the input of experienced local
pilots to meet the conditions in different harbors.
By 2008, the Netherlands pilots were
ready to replace some of their 15-year-
old Camarc boats. The international
cooperation turned full circle when the
Dutch captains traveled to the Pacific
Northwest to inspect the latest U.S. and
Canadian pilot boats. According to
Jurriaan Boer, the DPA’s resident technical superintendent at Kvichak, the
decision to consider building the boats
outside the Netherlands was primarily
taken due to full order books at most
Dutch yards.
Several factors enabled Kvichak to
win the contract, including their record
with Camarc boats, experience with
SCR, ability to guarantee delivery dates
in early 2010, and the strength of the
Euro. This contract is a notable success
for a U.S. yard, and according to the
company, is the largest export order
that Kvichak has ever received.
Construction and outfitting of the boats
is performed according to strict
American Bureau of Shipping High
Speed Craft rules.
The Caterpillar C- 32 is an ACERT-specific V- 12 platform with mechanically actuated electronically controlled unit
injection (MEUI) fuel system, the latest
ADEM A4 electronic control unit, and
responsive twin turbocharging and
after-cooling. The block has a 145 mm
bore and 162 mm stroke, and displaces
32. 1 L with available ratings from 492 to
1435 kW. The C- 32 is a versatile
machine with full power available over a
wide speed range and plenty of reserve
power useful for pilot boat operations.
The pilot boat’s twin C-32s are
equipped with twin turbochargers and
after-coolers and have a “B” heavy-duty rating of 970 bk W at 2100 r/min
for 5000 hours per year. The engines
drive Hamilton 651 waterjets via ZF
3050 2.154: 1 reduction gears giving a
top speed of 29 knots lightship
( 45 359 kg displacement).
The engines are mounted on Centa-Link torsional vibration dampers and
couplings. To meet the EU rules, they
are certified to burn low sulfur #3
fuel/EN590 ( 10 ppm). Service power is
produced by two Northern Lights
M944T four-cylinder 3. 33 L gen-sets
that each deliver 32 k W at 50 Hz.
The original Dutch Camarc pilot
boats followed standard European
practice with swept back pilothouse
windows. In the Pacific Northwest,
high-speed commercial boats have
always followed local workboat practice and fitted vertical or forward-lean-ing windows for best visibility and
impact resistance. This modification
was adopted by the Dutch Pilots, along
with the other distinctive feature of
Kvichak’s latest pilot boats — the
yacht-style bonded tinted windows.
The structure on the transom above
the water-jet guard frame is a hydraulically powered man-overboard rescue
platform. It is operated from a station
on the aft deck or at the bridge. When
in action, the basket flops over to
become a scoop that travels down the
rails until it is under water. With the
boat slowly backing up, a pilot overboard can be secured in the basket and
raised out of the water. A
SEE DIRECTLINK
WWW.DIESELGASTURBINE.COM
