Marquis 500 Sport Bridge Owner's Manual page 94

attitude of the yacht for variables such as: load, passengers, seas or wind . Use the tabs at planing speeds to make minor adjustments
in the fore-to-aft and beam-to-beam angle of the yacht .
uSIng the trIm tabS:
1 . Provide power to the DC Control Panel circuit breakers .
2 . Switch ON the MAIN (Single circuit breaker), DC Control Panel, located in the Salon Aft Cabinet .
3 . Switch ON the TRIM TABS circuit breaker, located on the
4 . Switch ON the Trim Tabs circuit breaker .
switches . The PORT switch controls the STDB tab; the STDB switch controls the PORT tab . Each switch is labeled BOW UP
and BOW DOWN .
5 . Press both switches on the BOW UP side for 5 seconds before advancing the throttles . Pressing both switches lifts the trim
tabs to the full UP position .
6 . Advance the throttles to bring the yacht on plane .
7 . Adjust the engine RPMs for cruising speed .
CauTiON
DO nOt OvERtRim thE yAcht. OvER-tRimming cAn cAUSE thE bOW tO vEER AnD mAy LEAD tO LOSS OF cOn-
tROL. pRESS thE cOntROL SWitchES FOR OnE-hALF SEcOnD At A timE, thEn ALLOW thE yAcht tO RESpOnD
WhEn ADJUSting thE tRim tAbS. cOntinUE tO ADJUSt thE tRim tAbS UntiL thE yAcht iS At thE DESiRED tRim
AngLE.
CauTiON
put the trIm tabS In the full "bow up" poSItIon when the SeaS are at any angle to the
yacht'S Stern. do not change the trIm tabS' poSItIon untIl the SeaS are no longer at
the Stern.
The trim tab switches can be used together to bring the bow of the yacht to a lower attitude . This adjustment is often used when
running into choppy seas . Bringing the bow down uses the sharper part of the yachts "V" hull to break through waves . Use the "BOW
DOWN" side of both trim tab switches simultaneously to adjust the trim . Be careful when making bow down adjustments . Excessive
bow down trim can cause considerable bow spray which hampers visibility and reduces control of your yacht .
leVelIng the yacht wIth the trIm tabS
Use the trim tabs individually to make beam-to-beam adjustments. If the majority of the onboard passen-
gers are sitting on the PORT side, the STDB side of the yacht should be riding higher than the PORT side.
Use the "BOW DOWN" side of the STDB trim tab switch to adjust the trim.
If the passengers decide to shift to the other side of the yacht, level the yacht by pressing the "BOW UP" side of the STDB trim tab
switch for a few seconds . This undoes your previous adjustment . Then, use the "BOW DOWN" side of the PORT trim tab switch to
adjust the trim .
80
O O
perating and perating and
DC Control Panel in the Salon Aft Cabinet .
A set of trim tabs controls are located at either helm . The controls consist of two
M M
aneuvering aneuvering
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