Click on any of
the pictures below to see a larger version.
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| MARINE INSTRUMENTATION |
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| This 41 feet aft cabin Maxum received
a full aftermarket instrumentation package including autopilot,
radar, chartplotter, GPS, depth gauge and VHF radio, all from
Raymarine. |
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| To the right on the control console, we installed
the combination radar and Raychart controller, the autopilot
controller plus the depth gauge. An autopilot safety cut-off
switch was also integrated in the dash. |
 
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| To the left on the control console, we installed
a Raymarine VHF radio. |
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| Atop the radar arch which extends above the hardtop,
we installed an 18-inch 2KW dome on a powder coated aluminum
tower which serves to elevate the scanner above the UHF/VHF
saucer antenna, thereby eliminating any ghosting. |
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To the port side of the arch, we installed a ‘smart’
GPS antenna which delivers coordinates to the radar/chartplotter
unit. This negates the use of a separate navigation unit.
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| We installed the 8 ft. VHF antenna on the opposite
side from the autopilot sensor cable routing paths as to avoid
this common interference. A stainless steel ratcheting base
allows the antenna to stand straight up or fold away for clearance
into the boathouse. A watertight gland provides for the coax
cable hull penetration. |
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Back supports stabilize the radar/chartplotter controller
mounting. |
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As with all the instrumentation, we flush-mounted the VHF
radio. |
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Shown is the SeaTalk junction box which integrates the GPS
and display unit. |
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Autopilot hydraulic plumbing behind the steering column. |
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A 3/4-inch polymer block provides a strong mounting base for
our autopilot hydraulic pump. |
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With limited space available, we constructed a sealed birch
stand to keep the autopilot computer vertical. A 30 amp relay
is controlled via a dash mounted kill switch and is mounted
on the same fixture. |
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| All cables and coax penetrate the deck under the
helm console via stainless steel clamshells which are silicon
sealed. |
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The autopilot compass must be located at a specific height
close to mid-ship. The compass and cabling must be clear of
any electromagnetic interference. Individual calibration is
required for each boat. |
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The rudder sensor is inverted (and reverse programmed) so
that it is precisely level and parallel to the rudder pivot
arm. |
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The depth transducer requires a hull penetration. A two-stage
process first seals the interior wall of the hull penetration
with a two-part resin similar to the marine composite chemistry.
The second stage seals the transducer on the inside, outside
and thru-the-hull with an underwater poly. |
| An aft cabin cruiser with an elevated bridge
presents unique cable routing challenges and extra long cabling.
Every bulkhead penetration has been carefully sealed. Every
detail has been carefully considered and executed in Earmark’s
marine installation. Our intention is to equal or exceed the
boat manufacturer’s construction standards. |
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| Earmark Car Audio
©2004 Earmark Car Audio. All Rights Reserved.
Design & Programming by Ad
Cetera Inc.
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