[0001] The present invention relates to a steering mechanism for a marine vessel, and a
marine vessel equipped with the same.
[0002] A marine vessel includes an ignition switch to start and stop a supply of electric
power to engine(s), a start/stop switch to start and stop the engine(s) according
to an operation, and an engine shutoff switch to emergency-stop the engine(s). In
addition, since these switches are operated during maneuvering of the marine vessel,
they are usually located on a panel of a maneuvering seat. For example, as shown in
FIG. 8, a main switch 82 also serving both as the ignition switch and the start/stop
switch, an engine shutoff switch 83, a remote control switch 6, a joystick 7, and
a multi-function display (MFD) 8 are located on a panel 81 of a maneuvering seat 80
(for example, see
JP 2020-101125 A). A steering wheel 9 is also located on the maneuvering seat 80.
[0003] Therefore, there is room for improvement in terms of flexibility in the layout of
the switches, such as the panel 81 having no sufficient space and difficulty in arranging
other switches.
[0004] In addition, a marine vessel operator usually grips the steering wheel 9, but since
the steering wheel 9 is separated from the panel 81 of the maneuvering seat 80, in
order to operate the main switch 82 and the like located on the panel 81 of the maneuvering
seat 80, the marine vessel operator needs to extend his/her hands, and in some cases,
it is necessary to lean his/her body toward the panel 81. Therefore, there is room
for improvement also from the viewpoint of the operability of the switches.
[0005] It Is the object of the present invention to provide a marine vessel steering mechanism
for marine vessels and a marine vessel that are each able to not only improve the
flexibility in the layout of switches but also improve the operability of the switches.
[0006] According to the present invention said object is solved by a marine vessel steering
mechanism having the features of independent claim 1. Moreover, said object is solved
by a marine vessel according to claim 12. Preferred embodiments are laid down in the
dependent claims.
[0007] According to a preferred embodiment, a marine vessel includes a marine vessel steering
mechanism. The marine vessel steering mechanism includes a steering wheel, and the
steering wheel includes switches related to starting and stopping of a power source
of the marine vessel.
[0008] According to another preferred embodiment, a marine vessel includes a marine vessel
steering mechanism. The marine vessel steering mechanism includes switches related
to starting and stopping of a power source of the marine vessel.
[0009] According to another preferred embodiment, a marine vessel steering mechanism includes
a steering wheel. The steering wheel includes switches related to starting and stopping
of a power source of a marine vessel.
[0010] According to the preferred embodiments, since the steering wheel of the steering
mechanism for the marine vessel includes the switches related to starting and stopping
of the power source of the marine vessel, it is no longer necessary to arrange the
switches related to starting and stopping of the power source of the marine vessel
on a panel of a maneuvering seat. As a result, it becomes easy to arrange other switches
on the panel of a maneuvering seat, and it is possible to improve the flexibility
in the layout of the switches. In addition, since the marine vessel operator is able
to operate the switches related to starting and stopping of the power source of the
marine vessel without taking his/her hands off the steering wheel, it is no longer
necessary to extend his/her hands for the operation, and it is also possible to improve
the operability of the switches related to starting and stopping of the power source
of the marine vessel. As a result, it is possible to not only improve the flexibility
in the layout of the switches but also improve the operability of the switches.
[0011] The above and other elements, features, steps, characteristics and advantages of
the present invention will become more apparent from the following detailed description
of the preferred embodiments with reference to the attached drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012]
FIG. 1 is a perspective view of a marine vessel equipped with a steering mechanism
for a marine vessel according to a preferred embodiment.
FIG. 2 is a perspective view of a principal portion of a maneuvering seat in the preferred
embodiment.
FIG. 3 is a view for explaining a configuration of the steering mechanism for the
marine vessel.
FIG. 4 is a view for explaining the configuration of the steering mechanism for the
marine vessel.
FIG. 5 is a block diagram for schematically explaining a configuration of a marine
vessel maneuvering system of the marine vessel of FIG. 1.
FIG. 6 is a view for explaining a configuration of a modified example of the steering
mechanism for the marine vessel.
FIG. 7 is a block diagram for schematically explaining a configuration of a modified
example of the marine vessel maneuvering system of the marine vessel of FIG. 1.
FIG. 8 is a perspective view of a principal portion of a conventional maneuvering
seat.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0013] Hereinafter, preferred embodiments will be described with reference to the drawings.
[0014] FIG. 1 is a perspective view of a marine vessel equipped with a steering mechanism
for a marine vessel according to a preferred embodiment. A marine vessel 1 includes
a hull 2, and a plurality of, for example, two outboard motors 3 that function as
marine vessel propulsion devices and are mounted on the hull 2. It should be noted
that the number of the outboard motors 3 provided on the marine vessel 1 is not limited
to two, and may be one or three or more. The two outboard motors 3 are mounted side
by side on the stern of the hull 2. Each outboard motor 3 includes an engine (not
shown) which may be an internal combustion engine functioning as a power source, and
obtains a thrust from a propeller (not shown) which is rotated by a driving force
of the corresponding engine. It should be noted that each outboard motor 3 may include
an electric motor functioning as the power source, or may include both an engine and
an electric motor functioning as the power source.
[0015] In addition, in the marine vessel 1, a maneuvering seat 4 is provided on the bow
side, which is the front portion of the hull 2. FIG. 2 is a perspective view of a
principal portion of the maneuvering seat 4. A steering mechanism 5 for a marine vessel
(hereinafter, also simply referred to as "a marine vessel steering mechanism 5"),
a remote control switch 6, a joystick 7, and an MFD 8 are located on the maneuvering
seat 4.
[0016] The marine vessel steering mechanism 5 is a device that enables a marine vessel operator
to determine the course of the marine vessel 1. The marine vessel steering mechanism
5 includes a steering wheel 9 which is rotatably operable. The marine vessel operator
is able to turn the marine vessel 1 left or right by rotatably operating the steering
wheel 9 left or right. The remote control switch 6 includes levers 10 corresponding
to the outboard motors 3, respectively. By operating each lever 10, the marine vessel
operator is able to switch a direction of the thrust generated by the corresponding
outboard motor 3 between a forward moving direction and a backward moving direction,
and adjust the output of the corresponding outboard motor 3 so as to adjust a vessel
speed of the marine vessel 1.
[0017] The joystick 7 is operable to be tilted forward, backward, leftward and rightward,
and is also operable to rotate about an axis. By operating the joystick 7, the marine
vessel operator is able to navigate the marine vessel 1 with a course corresponding
to a tilting direction of the joystick 7 and a thrust corresponding to a tilting amount
of the joystick 7. In a normal mode, the outboard motor 3 works mainly according to
an operation of the marine vessel steering mechanism 5 and an operation of the remote
control switch 6. On the other hand, in a joystick mode, the outboard motor 3 works
mainly according to an operation of the joystick 7. It is possible to switch between
the normal mode and the joystick mode by a change-over switch (not shown).
[0018] The MFD 8 is, for example, a color LCD display. The MFD 8 functions as a display
that displays various kinds of information, and also functions as a touch panel that
accepts inputs from the marine vessel operator. For example, the MFD 8 displays a
rotation speed of the engine of each outboard motor 3 and the vessel speed of the
marine vessel 1.
[0019] FIG. 3 and FIG. 4 are views for explaining a configuration of the marine vessel steering
mechanism 5. FIG. 3 shows a case that the marine vessel steering mechanism 5 is viewed
right opposite from the side of the marine vessel operator, and FIG. 4 shows a case
that the marine vessel steering mechanism 5 is obliquely viewed from the opposite
side of the marine vessel operator. It should be noted that a vertical direction and
a left/right direction of FIG. 3 correspond to the vertical direction and the left/right
direction of the marine vessel 1, the depth side of FIG. 3 is the bow side of the
marine vessel 1, and the front side of FIG. 3 is the stern side of the marine vessel
1.
[0020] As shown in FIG. 3 and FIG. 4, the marine vessel steering mechanism 5 includes the
steering wheel 9, and a column portion 11 that pivotally and rotatably supports the
steering wheel 9. The steering wheel 9 includes a central portion 13 that is supported
rotatably around a rotation fulcrum (a steering shaft) 12 with respect to the column
portion 11, a wheel portion 14 that has an annular shape, and, for example, three
spoke portions (spoke portions 15, 16, and 17) that connect the central portion 13
and the wheel portion 14. The steering wheel 9 is provided on the stern side of the
column portion 11. It should be noted that as shown in FIG. 4 and FIG. 6 described
below, the column portion 11 is configured by a rotating portion 11a that rotates
together with the steering wheel 9 and a non-rotating portion 11b that does not rotate.
[0021] When the steering wheel 9 is at a position that makes the marine vessel 1 move straight,
the spoke portion 15 is positioned below a virtual plane 18 passing through the rotation
fulcrum 12 and parallel to the left/right direction, and extends downward from the
rotation fulcrum 12.
[0022] Further, when the steering wheel 9 is at the position that makes the marine vessel
1 move straight, the spoke portion 16 is positioned above the virtual plane 18, and
extends from the rotation fulcrum 12 so as to be positioned within an angle range
from about 0° to about 60°, for example, clockwise with respect to the virtual plane
18 in a circumferential direction about the rotation fulcrum 12 (within an angle range
indicated by θ1 in FIG. 3), preferably, so as to be positioned within an angle range
from about 20° to about 40°, for example, clockwise with respect to the virtual plane
18 in the circumferential direction about the rotation fulcrum 12 (within an angle
range indicated by θ2 in FIG. 3).
[0023] Furthermore, when the steering wheel 9 is at the position that makes the marine vessel
1 move straight, the spoke portion 17 is positioned above the virtual plane 18, and
extends from the rotation fulcrum 12 so as to be positioned within an angle range
from about 0° to about 60°, for example, counterclockwise with respect to the virtual
plane 18 in the circumferential direction about the rotation fulcrum 12 (within an
angle range indicated by θ3 in FIG. 3), preferably, so as to be positioned within
an angle range from about 20° to about 40°, for example, counterclockwise with respect
to the virtual plane 18 in the circumferential direction about the rotation fulcrum
12 (within an angle range indicated by θ4 in FIG. 3).
[0024] In the preferred embodiment, as shown in FIG. 3, an ignition switch 19 and a start/stop
switch 20 are located on the steering wheel 9. The ignition switch 19 is a switch
to start and stop a supply of electric power to the engine of each outboard motor
3, and the start/stop switch 20 is a switch to start and stop the engine of each outboard
motor 3 according to the operation.
[0025] For example, the ignition switch 19 and the start/stop switch 20 are located on the
spoke portion 17 of the steering wheel 9. In particular, it is preferable that the
start/stop switch 20 is located within a range that fingers of the marine vessel operator
who is gripping the wheel portion 14, for example, thumbs of the marine vessel operator
who is gripping the wheel portion 14, are able to reach.
[0026] When the marine vessel 1 is navigating, sometimes the marine vessel operator grips
the wheel portion 14 while standing, at that time, since the marine vessel operator
holds the wheel portion 14 from above, the marine vessel operator grips the upper
half of the wheel portion 14, particularly grips the vicinity where the wheel portion
14 intersects the spoke portions 16 and 17. Therefore, in the case that the start/stop
switch 20 is located within the range of the spoke portion 17 that the thumbs of the
marine vessel operator who is gripping the wheel portion 14 are able to reach, the
marine vessel operator is able to operate the start/stop switch 20 with his/her thumbs
without regripping the wheel portion 14. As a result, for example, when the marine
vessel operator starts or stops the engine of each outboard motor 3 in order to allow
a passenger to ride a wakeboard, the marine vessel operator does not need to take
his/her hands off the wheel portion 14.
[0027] Further, it is preferable that the start/stop switch 20 and the ignition switch 19
are located adjacent to each other. As a result, the marine vessel operator is able
to continuously operate the ignition switch 19 and the start/stop switch 20 to start
the supply of the electric power to the engine of each outboard motor 3 and then immediately
start the engine of each outboard motor 3.
[0028] It should be noted that the place where the ignition switch 19 and the start/stop
switch 20 are located is not limited to the spoke portion 17, and may be the central
portion 13, the spoke portion 15, or the spoke portion 16. Specifically, the ignition
switch 19 and the start/stop switch 20 may be located on any one of switches 21 to
28 shown in FIG. 3, respectively. It should be noted that the ignition switch 19 and
the start/stop switch 20 may not be located adjacent to each other. Moreover, the
ignition switch 19 and the start/stop switch 20 may be located not only on the surfaces
of the spoke portions 15, 16, and 17 but also on the sides thereof.
[0029] Furthermore, in addition to the ignition switch 19 and the start/stop switch 20,
a battery switch may be located on any one of the switches 21 to 28 of the steering
wheel 9. Since the battery switch is a switch to switch whether or not the electric
power is supplied from a battery of the marine vessel 1 to the electrical system of
the marine vessel 1 when the marine vessel 1 is moored or landed and does not work
for a while and is not used so frequently, the battery switch may be located on a
place where the marine vessel operator needs to take his/her hands off the wheel portion
14 for operation, for example, may be located on the spoke portion 15.
[0030] Moreover, in the preferred embodiment, as shown in FIG. 4, an engine shutoff switch
29 is located on the non-rotating portion 11b of the column portion 11. The engine
shutoff switch 29 is a switch to emergency-stop the engine of each outboard motor
3. For example, in the preferred embodiment, the engine shutoff switch 29 includes
a push switch, and works (is activated) by cooperation between a lanyard 30 and the
push switch. Here, a working mechanism (an activation mechanism) of the engine shutoff
switch 29 will be described. In the engine shutoff switch 29, in the case that a hook
at the tip of the lanyard 30 as a rope attached to the body of the marine vessel operator,
for example, the ankle of the marine vessel operator, is interposed between the column
portion 11 and the push switch biased toward the column portion 11, when the marine
vessel operator falls into the water from the marine vessel 1, the hook pulled by
the lanyard 30 is released from the push switch, the push switch moves toward the
column portion 11 and works (is activated), and the engine of each outboard motor
3 is emergency-stopped. Moreover, since the engine shutoff switch 29 is located on
the non-rotating portion 11b, the lanyard 30 will not be pulled even when the steering
wheel 9 is rotated, and it is possible to prevent the engine shutoff switch 29 from
working (being activated) unintentionally due to the operation of the steering wheel
9 when the marine vessel operator navigates the marine vessel 1.
[0031] On the column portion 11, the engine shutoff switch 29 is positioned below the virtual
plane 18. As a result, it is possible to easily connect the engine shutoff switch
29 and the ankle of the marine vessel operator by using the lanyard 30, and it is
possible to assist smooth working (activation) of the engine shutoff switch 29.
[0032] FIG. 5 is a block diagram for schematically explaining a configuration of a marine
vessel maneuvering system of the marine vessel 1. As shown in FIG. 5, in addition
to the outboard motors 3, the marine vessel steering mechanism 5, the remote control
switch 6, the joystick 7, the MFD 8, the ignition switch 19, the start/stop switch
20, and the engine shutoff switch 29 that are described above, the marine vessel maneuvering
system of the marine vessel 1 includes a global positioning system (GPS) 31, a heading
sensor (HS) 32, a remote control ECU (Engine Control Unit) 33 functioning as a controller,
steering control units (SCUs) 34, and a steering shaft sensor 35. It should be noted
that the steering shaft sensor 35 is located on the column portion 11 together with
the engine shutoff switch 29. As described above, the ignition switch 19 and the start/stop
switch 20 are located on the steering wheel 9 of the marine vessel steering mechanism
5.
[0033] The GPS 31 obtains the current position of the marine vessel 1 and transmits the
current position of the marine vessel 1 to the remote control ECU 33 as position information.
The HS 32 incorporates direction sensors (azimuth sensors) such as a yaw sensor, a
roll sensor, and a pitch sensor, an acceleration sensor that measures an acceleration
of the marine vessel 1 in a front-rear direction (a longitudinal direction), an acceleration
sensor that measures an acceleration of the marine vessel 1 in a left/right direction,
and an acceleration sensor that measures an acceleration of the marine vessel 1 in
a vertical direction. The HS 32 transmits a direction of the marine vessel 1 and the
respective accelerations (movement) of the marine vessel 1 to the remote control ECU
33.
[0034] The remote control ECU 33 is a main controller of the marine vessel maneuvering system,
and controls operations of respective components of the marine vessel maneuvering
system according to digital signals that will be described below, and various kinds
of programs. In addition, the remote control ECU 33 controls the engine of each outboard
motor 3 according to the operation of each lever 10 of the remote control switch 6.
The SCU 34 is provided corresponding to each outboard motor 3, and controls a steering
unit (a steering mechanism) that horizontally turns the corresponding outboard motor
3 with respect to the hull 2 of the marine vessel 1 so as to change an acting direction
of the thrust of each outboard motor 3. The steering shaft sensor 35 detects a rotation
angle (an operation angle) of the steering wheel 9 of the marine vessel steering mechanism
5.
[0035] In the marine vessel maneuvering system, the respective components are connected
to each other by a control area network (CAN) 36 that is a network in which a plurality
of nodes are individually connected to a bus. In the CAN 36, operation inputs to the
respective components are transmitted as the digital signals to the remote control
ECU 33 via the bus.
[0036] In addition, in the marine vessel maneuvering system, the remote control switch 6
is connected to the remote control ECU 33 not only by the CAN 36 but also by individual
wiring (see a broken line in FIG. 5). The operation input to each lever 10 of the
remote control switch 6 is transmitted also as an analog signal to the remote control
ECU 33. Further, the engine shutoff switch 29 is connected to the remote control ECU
33 only by individual wiring (see a broken line in FIG. 5), and working (activation)
of the engine shutoff switch 29 is transmitted to the remote control ECU 33 as an
analog signal. Moreover, the ignition switch 19 and the start/stop switch 20 of the
marine vessel steering mechanism 5 are connected to the remote control ECU 33 not
only by the CAN 36 but also by individual wiring (see a broken line in FIG. 5). The
operation input to the ignition switch 19 and the operation input to the start/stop
switch 20 are also transmitted to the remote control ECU 33 as analog signals.
[0037] It should be noted that in the marine vessel maneuvering system, the respective components
may be connected to each other not by the CAN but by a local area network (LAN) such
as Ethernet (registered trademark) that performs connecting via a network device,
or the respective components may be directly connected to each other. Also in this
case, the operation inputs to the respective components are transmitted as the digital
signals to the remote control ECU 33.
[0038] When the ignition switch 19 is operated, the operation input to the ignition switch
19 is transmitted as the analog signal to the remote control ECU 33, and the remote
control ECU 33 performs starting or stopping the supply of the electric power to the
engine of each outboard motor 3 according to the operation input to the ignition switch
19. Furthermore, when the start/stop switch 20 is operated, the operation input to
the start/stop switch 20 is transmitted as the analog signal to the remote control
ECU 33, and the remote control ECU 33 transmits a control signal to an ECU (not shown)
of each outboard motor 3 according to the operation input to the start/stop switch
20 to start or stop the engine of each outboard motor 3. Moreover, when the engine
shutoff switch 29 works (is activated), the working (activation) of the engine shutoff
switch 29 is transmitted as the analog signal to the remote control ECU 33, and the
remote control ECU 33 emergency-stops the engine of each outboard motor 3.
[0039] According to the preferred embodiment, the ignition switch 19 and the start/stop
switch 20 are located on the spoke portion 17 of the steering wheel 9. As a result,
since the marine vessel operator is able to operate the ignition switch 19 and the
start/stop switch 20 without taking his/her hands off the steering wheel 9, it is
no longer necessary to reach for switches located on a panel of the maneuvering seat
4 for operation. Therefore, it is possible to improve the operability of the ignition
switch 19 and the start/stop switch 20.
[0040] In addition, in the preferred embodiment, since the ignition switch 19 and the start/stop
switch 20 are located on the steering wheel 9 and the engine shutoff switch 29 is
located on the column portion 11, it is possible to eliminate the need to arrange
the ignition switch 19, the start/stop switch 20, and the engine shutoff switch 29
on the panel of the maneuvering seat 4, and it is possible to arrange other switches
on the panel of the maneuvering seat 4. As a result, it is possible to improve the
flexibility in the layout of other switches.
[0041] Furthermore, in the preferred embodiment, since it is possible to construct the marine
vessel maneuvering system of FIG. 5 in the marine vessel 1 only by arranging the marine
vessel steering mechanism 5, which includes the steering wheel 9 and the column portion
11, on the marine vessel 1, without arranging the ignition switch 19, the start/stop
switch 20, and the engine shutoff switch 29 on the panel of the maneuvering seat 4,
it is possible to easily realize the control of the supply of the electric power to
the engine, the control of start/stop of the engine, and the emergency-stopping function
of the engine within the marine vessel 1.
[0042] It should be noted that in the preferred embodiment, the reason why the operation
of the ignition switch 19, the operation of the start/stop switch 20, and the working
(activation) of the engine shutoff switch 29 are transmitted to the remote control
ECU 33 as the analog signals is to ensure signal transmission.
[0043] Alternatively to the preferred embodiment has been described above, for example,
as shown in FIG. 6, the ignition switch 19 and the start/stop switch 20 may be located
on the rotating portion 11a of the column portion 11 instead of the steering wheel
9. In this case, as shown in FIG. 7, as with the engine shutoff switch 29, the ignition
switch 19 and the start/stop switch 20 are also connected to the remote control ECU
33 by individual wiring (see broken lines in FIG. 7), respectively.
[0044] Furthermore, in the case that the engine shutoff switch is configured by a simple
push switch without a lanyard, this engine shutoff switch may be located on any one
of the switches 21 to 28 of the steering wheel 9.
[0045] Although the marine vessel steering mechanism 5 according to the preferred embodiment
is applied to the marine vessel 1 including the two outboard motors 3, there is no
limitation on the type of the marine vessel to which the marine vessel steering mechanism
5 according to the preferred embodiment is applied, and it may be applied to a marine
vessel equipped with inboard/outboard motors or inboard motors.
1. A marine vessel steering mechanism (5) for a marine vessel (1) comprising:
switches (19, 20, 29) related to starting and stopping of a power source of the marine
vessel (1).
2. The marine vessel steering mechanism (5) according to claim 1, further comprising:
a steering wheel (9), and
wherein the steering wheel (9) includes the switches (19, 20, 29) related to starting
and stopping of a power source of a marine vessel (1).
3. The marine vessel steering mechanism (5) according to claim 1 or 2, wherein the switches
related to starting and stopping of the power source include at least one of an ignition
switch (19) to start and stop a supply of electric power to the power source, a start/stop
switch (20) to start and stop the power source according to an operation, and an engine
shutoff switch (29) to emergency-stop the power source.
4. The marine vessel steering mechanism (5) according to claim 2 and 3, wherein the steering
wheel (9) includes the ignition switch (19) and the start/stop switch (20).
5. The marine vessel steering mechanism (5) according to claim 4, wherein the steering
wheel (9) includes a central portion (13) that is supported rotatably around a rotation
fulcrum (12), a wheel portion (14) that has an annular shape, and spoke portions (15,
16, 17) that connect the central portion (13) and the wheel portion (14), and
at least one of the ignition switch (19) and the start/stop switch (20) is located
on one of the spoke portions (17).
6. The marine vessel steering mechanism (5) according to claim 5, wherein the one of
the spoke portions (17), on which the at least one of the ignition switch (19) and
the start/stop switch (20) is located, is positioned above a virtual plane (18) passing
through the rotation fulcrum (12), and is positioned within an angle range from about
0° to about 60° with respect to the virtual plane (18) in a circumferential direction
about the rotation fulcrum (12).
7. The marine vessel steering mechanism (5) according to claim 2 and 3, further comprising:
a column portion (11) that rotatably supports the steering wheel (9), and
at least one of the engine shutoff switch (29), the ignition switch (19) and the start/stop
switch (20) is located on the column portion (11).
8. The marine vessel steering mechanism (5) according to claim 7, wherein on the column
portion (11), the engine shutoff switch (29) is positioned below a virtual plane (18)
passing through a rotational center of the steering wheel (9).
9. The marine vessel steering mechanism (5) according to at least one of the claims 3
to 8, wherein the ignition switch (19) and the start/stop switch (20) are located
adjacent to each other.
10. The marine vessel steering mechanism (5) according to claim 2 and at least one of
the claims 3 to 9, wherein the steering wheel (9) further includes a battery switch
to switch whether or not the electric power is supplied from a battery.
11. The marine vessel steering mechanism (5) according to at least one of the claims 3
to 10, wherein the ignition switch (19), the start/stop switch (20), and the engine
shutoff switch (29) emit analog signals according to respective operations.
12. A marine vessel (1) having a hull (2) comprising:
a marine vessel steering mechanism (5) according to at least one of the claims 1 to
11.
13. The marine vessel (1) according to claim 12, with the marine vessel steering mechanism
(5) according to claim 2 and 5, wherein the central portion (13) of the steering wheel
(9) is supported rotatably around the rotation fulcrum (12) with respect to the hull
(2) of the marine vessel (1).
14. The marine vessel (1) according to claim 13, with the marine vessel steering mechanism
(5) according to claim 6 or 8, wherein the virtual plane (18) passing through the
rotation fulcrum (12) is parallel to a left/right direction with regard to the hull
(2) of the marine vessel (1).
15. The marine vessel (1) according to at least one of the claims 12 to 14, wherein the
power source is an internal combustion engine or an electric motor.