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AVANCE


6 There are few exceptions to the general rule

Sailboat configuration:

Exceptionally, there could be sailboats in which, if the Saildrive propeller and the rudder where very close, (closer than 1/6 of the waterline length) the inflow jet of the propeller could provide engaging reverse more early maneuvering capacity to the rudder than usually, but this configuration is very inusual.

In the opposite case, the boats with the Saildrive in inverted position, that is, with the propeller ahead of the engine, will be able to turn on themselves without moving longitudinally, or almost, in slow ahead, full rudder, either left-hand, or right-hand. (These are usually small boats, whose distance between the center of the keel and the propeller so close as to 1/5 of the waterline length).

Single-hull two-rudders
sailboats maneuver basically as single rudder does.

Very exceptionally, the rudder could be placed in front of the Saildrive, mainly in cats (i.e. cats Lagoon). Such configuration does not significantly influence the maneuver in such twin-keel boats.

Berthing into a corner slip:

There will be some slips located at the end of the aisle that you cannot enter without some extra help; the prop-walk could be more useful in those specific locations. (but remember: you do not have prop-walk effect).

Strong current (either river or/and tidal stream):

The effect of the current moves the boat in its direction and with its intensity (IC), barely spinning it or spinning the stern. The rudder has a certain ability to maneuver over the current, as there is flow on its blade, which is optimal when the current carries an opposite direction to our course (relatively high speed through the water STW with a slow speed over the ground SOG).

If the current is just discrete, always try to dock against it, either stern or bow.

With strong current, try if it is possible to dock bow against it.

Some good reasons for not docking stern to:

When you arrive, tired, to a foreign port.

If you are not confident with your capabilities (It is prudent to do things the easier way, so please remember to dock stern to only if you can)

When the wind force (speed) is too strong.

During a squall.

When there is important wind and current too.

With strong current, try if it is possible to dock bow against it.

Docking to a very very narrow slit.

If the rudder blade protrudes from the transom.