JPH10338191A - Water surface travelling boat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to clearly hear sound from a speaker even in the middle of cruising and to eliminate intrusion of water from a speaker installing part by installing the speaker on a vertical wall extending in the width direction and the vertical direction of a hull of a part to be a front end part of a footstep on a deck so that the radial direction of sound is directed to the rear of the hull. SOLUTION: A cover body 30 to open and close a recessed part opened upward on a deck 3 of an amplifier 28 is pivotally installed on an upper surface of the deck 3 through a hinge. Opening and closing of the cover body 30 is carried out by an occupant by drawing up and down a hull rear side end part around an end part on the hull front side as a fulcrum. A sealing member is interposed between an opening edge part of the recessed part and the cover body 30, water does not intrude in the inside of the recessed part in a closed state of the cover body 30, and a driver opens the cover body 30 and operates the amplifier 28. As speakers SP1, SP2 are installed on an upper part of a front part inclined plate 12B of a footstep 12 so that the radial direction of sound is directed to the rear of the hull 2, it is possible to clearly catch sound from the front of a foot of an occupant both at the time of anchoring and cruising.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a watercraft in which an occupant sits astride a seat on an upper part of a hull and grips a steering handle provided in front of the hull from the seat to sail.

[0002]

2. Description of the Related Art A watercraft of this type is mainly used for leisure purposes, and can adopt various types of traveling modes such as rapid turning, jumping, or touring while enjoying the scenery. The hull of the watercraft is formed by joining a deck to a hull, and has a water jet propulsion device including an engine and a jet pump mounted therein.

[0003] The deck is provided with a seat support that protrudes upward at a portion above the engine, that is, at the center in the width direction of the hull, and seats are mounted on the seat support. Foot steps are provided on both sides for occupants to put their feet on. A side of the deck having a structure that rises upward is provided outside the hull of the foot step on the deck.

A portion of the deck in front of the hull from the seat is formed so as to bulge upward.
A steering handle is provided at the highest part of the bulge. In a conventional watercraft, a luggage storage box is provided, which is provided on the hull front side of the steering wheel and opens upward inward of the hull, and a lid constituting a part of the bulging portion of the deck is provided with a luggage storage box. A structure that opens and closes the upper opening of the storage box may be adopted.

[0005]

SUMMARY OF THE INVENTION The inventors of the present invention have designed an audio system on a hull of a conventional watercraft so that an occupant can enjoy music, radio broadcasting, and the like while the occupant is on board. I'm thinking about putting on.

However, in order to provide an audio device on a hull, the arrangement of speakers has been a problem. This is because the speakers must be arranged so that the sound can be heard well during the cruising. In addition, a hole must be made in the mounting seat on the hull for mounting the speaker, so that water must enter the hull through this hole, and the speaker must be placed near the engine. In such a case, the speaker must not be heated by the heat of the engine.

The present invention has been made in order to solve such a problem, and it is possible to easily hear sound from a speaker even while sailing, and to prevent water from entering from a speaker mounting portion.
An object of the present invention is to provide a watercraft in which a speaker is not heated by heat of an engine.

[0008]

In order to achieve this object, a watercraft according to the present invention comprises a vertical section formed at a front end portion of a foot step on a deck so as to extend in a width direction and a vertical direction of a hull. A speaker is mounted on a wall such that the direction of sound emission is directed toward the rear of the hull. According to the present invention, sound is emitted toward the occupant from the front of the feet of the occupant in the driving state.

A watercraft according to another aspect of the invention has a vertical wall formed at a rear end portion of a foot step on a deck so as to extend in a width direction and a vertical direction of the hull. It is attached so as to be directed in front of. According to the present invention, sound is radiated toward the occupant from behind the feet of the occupant in the driving state.

A watercraft according to another invention has a speaker mounted on a side wall inside a hull on the side of a ship which rises upward outside the footstep so that a sound radiation direction is directed toward the inside of the hull. According to the present invention, sound is emitted from the side of the occupant toward the occupant.

In a watercraft according to another invention, the side surface inside the hull on the side of the ship is inclined so as to gradually move away from the seat support as it goes upward, and a speaker is provided on the side wall of the seat support in a sound radiation direction. Are mounted so as to face the side of the hull. According to the present invention, the sound radiated from the speaker is reflected on the side surface on the side of the ship and propagates to the occupant.

In a watercraft according to another aspect of the present invention, a speaker is provided on a rear wall on the rear side of the hull of the lid provided so as to protrude forward from the steering handle to the hull so that the sound radiation direction is directed toward the rear of the hull. It is attached to. ADVANTAGE OF THE INVENTION According to this invention, a sound is radiated toward an occupant from the part near the ear of the occupant in a driving state.

A watercraft according to another aspect of the present invention has a speaker mounted so as to penetrate near a sheet on a deck, and a partition wall is provided between the speaker and the engine. According to the present invention, the partition wall prevents the heat of the engine from being transmitted to the speaker.

A watercraft according to another invention is the watercraft according to the invention described above, wherein a seal member made of an elastic body is interposed between the speaker mounting seat and the speaker. According to the present invention, the seal member prevents water from entering the hull from the portion where the speaker is mounted.

A watercraft according to another aspect of the present invention is the watercraft according to the above-described invention, wherein the watercraft is opened outwardly of the hull between the seat and the steering wheel, and the upper opening is opened and closed by a lid. A concave portion is formed, and an amplifier connected to a speaker is accommodated in the concave portion. ADVANTAGE OF THE INVENTION According to this invention, a driver can operate an amplifier by opening a cover and extending a hand in a recessed part.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a watercraft according to the present invention will be described below in detail with reference to FIGS. FIG. 1 is a side view of a watercraft according to the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a cross-sectional view of a hull when speakers are mounted on a side surface on the side of a ship, and FIG. 4 is a case where speakers are mounted on a seat support. FIG. 2 is a transverse sectional view of the hull of FIG. 5 is a sectional view taken along line VV in FIG. 2, FIG. 6 is a sectional view taken along line VI-VI of the hull in FIG. 2, and FIG. 7 is a perspective view showing a mooring eye.

In these figures, reference numeral 1 denotes a watercraft according to this embodiment. The watercraft 1 comprises a hull 2 composed of a hull 2a and a deck 3 joined to an upper opening of the hull 2a, and has a well-known water jet propulsion device having an engine 4 and a jet pump 5 in the hull 2. 6 is installed. Reference numeral 7 provided in the hull 2 at the front of the hull with respect to the engine 4 denotes a fuel tank, and reference numeral 8 provided at the rear of the hull with respect to the engine 4 denotes a water lock interposed in the exhaust system. . These also adopt a conventionally well-known structure.

A portion for joining the hull 2a and the deck 3,
That is, as shown in FIG. 3, the gunnel portion 9 is formed in an L-shaped cross section from a horizontally extending portion extending horizontally and outward of the hull and a downward extending portion extending downward from the outer end of the horizontal extending portion. At the same time, it is formed so that the front part of the hull is shaped like a letter in a side view shown in FIG. More specifically, the front portion of the hull of the gunnel portion 9 is formed so as to extend upward from the front end of the hull 2 in a side view, and then extend downward toward the side of the fuel tank 7. .
A portion extending rearward is indicated by reference numeral 9a, and a portion extending rearward is indicated by reference numeral 9b.

A part 9 extending downwardly to the gunnel part 9
By forming b, it is possible to prevent the hull 2 from being excessively tilted due to the water hitting during turning.
Further, by forming the portion 9a which is inclined upward and rearward, the upper part of the front end of the hull 2a is lowered, and the front edge 2
The inclination angle of b with respect to the water surface L becomes smaller. The leading edge 2
b, the hull 2 during cruising
Reduces the number of water droplets scattered upward and forward when the water is pushed through.

The deck 3 is formed to have a shape in which a central portion in the width direction of the hull 2 bulges upward, a steering handle 10 is provided in front of the hull of the bulge portion, and from the center of the hull to the rear side of the hull. A seat 11 is provided. Also,
As shown in FIG. 3, the deck 3 has a foot step 12 on which the occupant places his or her feet by partially recessing portions on both sides of the seat 11, and a portion outside the hull of the foot step 12. An upwardly extending side 13 is integrally formed.

The seat 11 is formed with such a length that three occupants can sit comfortably. The watercraft 1 according to this embodiment has a longer overall length than the conventional one and has a higher stability during sailing. Therefore, such a long seat 11 in the longitudinal direction of the hull 2 is used. Can be. Further, since the stability at the time of traveling is high, it is possible to enjoy touring while listening to music using an audio device described later.

The seat 11 is removably attached to a seat support 14 which constitutes a rear portion of the upper swelling portion of the deck 3. The seat support 14 is open upward, and the opening is opened and closed by the seat 11. In other words, the sheet 11 is
By removing the hull 2, the inside of the hull 2 can be exposed through the opening.

The foot step 12 includes a horizontal plate 12a extending from the lower end of the seat support 14 to the outside of the hull in a substantially horizontal direction, and gradually from the front end of the horizontal plate 12a toward the hull front. It comprises a front inclined plate 12b extending upward and a rear inclined plate 12c extending upward from the rear end of the horizontal plate 12a.
The side wall 13a inside the hull on the side of the shore 13 is connected to the outside of the hull of the horizontal plate 12a. This side wall 13a
As shown in FIG. 3, it is inclined so as to gradually move away from the seat support 14 as it goes upward.

The front inclined plate 12 of the foot step 12
b is formed so that the lateral width gradually increases toward the front of the hull, and the rear inclined plate 12c is formed such that the lateral width gradually decreases toward the rear of the hull. A drain hose 1 for discharging water that has entered the foot step 12 is provided below the rear inclined plate 12c.
5 is open at the upper end.

In this embodiment, a rear luggage storage box 16 is provided behind the hull 2 from the foot step 12, and a front luggage storage box 17 is provided at the forefront of the hull 2. The rear luggage storage box 16 is, as shown in FIG.
It is formed so as to open upward, and the upper opening is
The structure that opens and closes with 8 is adopted. The upper surface of the lid 18 is formed substantially flat so that an occupant can walk on the lid 18 in a closed state, and the outer end of the hull is hinged to the hinge 1.
9 and a locking member 20 is attached to the inner end of the hull. This locking member 20
Has a structure in which the locked state is released by pulling up the hook 20a.

The hook 20a is located below the lid 18, and protrudes from the edge of the lid 18 when viewed from above as shown in FIG. By providing the hook 20a so as not to protrude upward from the lid 18, the hook 20a does not hinder the occupant when walking on the lid 18.

The front luggage storage box 17 provided on the front side of the hull
It is located between the bow and the steering wheel 10 and is formed so as to open upward, and the upper opening is opened and closed by a lid 21 attached thereto.
The lid 21 is formed so as to overlap from above with a handle base 22 constituting a front portion of the upper bulging portion of the deck 3, and has a structure in which a rear end swings up and down around a front end of the hull. Has been adopted. Also, this lid 21
As shown in FIG. 1, a meter 23 is mounted on the rear surface.
In this embodiment, mooring eyes 24 are provided on both sides of the lid 21 and the handle base 22 and in front of the foot step 12.

The mooring eye 24 is formed in a U-shaped cross section as shown in FIGS. 6 and 7, and is fixed to a corner portion formed at both ends of the deck 3 in the width direction of the hull 2. In this embodiment, besides disposing the mooring eye 24 on the side of the handle base 22, as shown in FIG. The corners are also located. In addition, the corner portion indents a portion where the mooring eye 24 is to be mounted, so that the mooring eye 24 attached here does not protrude significantly from the deck 3. This recess is indicated by reference numeral 25 in the figure.

Since the corner portion of the deck 3 has higher rigidity than other flat portions, the mooring eye 24 can be firmly fixed to the deck 3 without using a reinforcing material. Also,
By arranging the mooring eyes 24 on both sides of the lid 21 and the seat 11, when the locking device of the lid 21 and the seat 11 is damaged and cannot be kept closed, Rope 2 between mooring eyes 24
6 (see FIG. 2), and the lid 21 and the seat 11 can be fixed.

The mooring eye 24 is not necessarily attached to the hull 2
It is not necessary to provide on both sides. When the mooring eye 24 is provided only on one side in the width direction of the hull 2, a pier (not shown)
The mooring eye 24 is attached to the right side of the hull where the fuel cap 27 is located so that the fuel can be supplied while mooring. The mounting position of the mooring eye 24 on the hull front side is
Since the bow only needs to be directed to the windward at the time of mooring, the bow can be changed as long as it is located forward of the center of the hull 2 in the front-rear direction. If it is arranged in the position shown in this embodiment, that is, on both sides of the handle stand 22 and in front of the hull 2 from the foot step 12, this portion is a dead space, so a large mooring eye 24 is used. be able to.

Further, by providing the mooring eye 24 on the rear side of the hull on the upper outer side of the sideboard 13 as shown in this embodiment, when the occupant re-boards on the foot step 12 from the water, the mooring eye 24 is provided. The upper body can be pulled up onto the side of the ship 13 by grasping the 24.

The watercraft 1 has a hull 2 so that music and radio broadcasts can be heard at anchor and while the ship is running.
Equipped with audio equipment. This audio device includes an amplifier 28 (see FIG. 1) disposed between the steering wheel 10 and the seat 11, and a deck 3 near the seat 11.
And speakers SP1 to SP8 attached to the speaker. The amplifier 28 is housed in a recess 29 formed to open upward on the deck 3. A lid 30 for opening and closing the concave portion 29 is provided in the opening of the concave portion 29.
Are pivotally connected to the upper surface of the deck 3 via hinges (not shown). The opening and closing of the lid 30 is performed by the occupant pulling up and down the rear end of the hull with the front end of the hull as a fulcrum. A sealing member (not shown) is interposed between the opening edge of the concave portion 29 and the lid 30, and water is supplied when the lid 30 is closed.
9 so as not to enter.

By housing the amplifier 28 in the recess 29 in this way, the driver can operate the amplifier 28 by opening the lid 30 and extending his hand into the recess 29.

In the present embodiment, the speakers SP1 to SP8 employ cone-type dynamic speakers having a waterproof cone portion, so that the occupant seated on the seat 11 can hear the sound even while sailing. It is arranged at a position where sound is radiated toward the occupant away from the occupant by the wind (to the rear of the hull 2), that is, at a position where sound is emitted toward the occupant, avoiding a position behind the seat 11. In FIG. 2, speakers are depicted at four positions in the front-rear direction of the hull 2 and on both sides in the width direction of the hull 2, respectively.
It is not necessary to attach all the speakers.

The speakers SP1 and SP2 are mounted on the front inclined plate 12b of the foot step 12 so that the sound radiation direction is directed to the rear of the hull 2. By attaching the speakers SP1 and SP2 in this manner, sound is emitted from the front of the feet of the occupant in the driving state toward the occupant.

The speakers SP3 and SP4 are connected to the footstep 1
2 is attached to the rear inclined plate 12c so that the sound radiation direction is directed forward of the hull 2. By installing the speakers SP3 and SP4 in this manner, sound is radiated toward the occupant from behind the feet of the occupant in the driving state.

As shown in FIG. 3, the speakers SP5 and SP6 are mounted on the side wall 13a on the inner side of the hull on the side of the hull 13 which rises upward outside the foot step 12 so that the radiation direction of the sound is directed toward the inner side of the hull. . Thus, the speaker S
By attaching P5 and SP6, sound is emitted from the side of the occupant toward the occupant. In particular, in this embodiment,
Since the side wall 13a is inclined so as to be unevenly distributed toward the outside of the hull as it goes upward, the speaker S
The radiation directions of the sounds P5 and SP6 are directed to the occupant, and the sound is easily transmitted to the occupant.

As shown in FIG. 4, the speakers SP7 and SP8 have the sound radiation direction on the side wall of the seat
It is attached so that it is pointed to the side of. By attaching the speakers SP7 and SP8 in this manner, the sound radiated from the speakers SP7 and SP8 is reflected on the side wall 13a inside the hull on the side of the ship side 13. Since the side wall 13a is inclined as described above, the sound reflected on the side wall 13a propagates to the occupant as indicated by the arrow in FIG.

The speakers SP1 to SP8 are shown in FIGS.
The mounting structure shown below is adopted. That is, speaker mounting holes are formed in the deck 3, and the speakers SP1 to SP8 are fitted into the mounting holes so as to penetrate the deck 3. Also, a mounting seat formed at an opening edge of the mounting hole,
A seal member 31 made of an elastic body is interposed between the speakers SP1 to SP8.

By adopting the mounting structure in which the seal member 31 is interposed, the seal member 31 prevents water from entering the hull 2 from the portion where the speakers SP1 to SP8 are mounted. However, the watertightness of the hull 2 can be kept high. Moreover, since the seal member 31 is an elastic body, the speaker SP1
The vibration transmitted to SP <b> 8 can be attenuated by the seal member 31.

As shown in FIG. 4, when the speakers SP7, SP8 are arranged near the engine 4, it is desirable to arrange a partition wall 32 between the speakers SP7, SP8 and the engine 4. By providing the partition wall 32 in this manner, since the partition wall 32 prevents the heat of the engine 4 from being transmitted to the speakers SP7, SP8, the speaker SP7,
8 is not heated by the heat of the engine 5.

Second Embodiment A speaker can be provided on a lid in front of a steering wheel. An example of this embodiment will be described in detail with reference to FIGS. 8 is a side view of a watercraft in which a speaker is arranged on a lid in front of a steering wheel, FIG. 9 is a longitudinal sectional view of a lid and a luggage storage box, FIG. 10 is a plan view of a front part of a hull, and FIG. It is a cross-sectional view of a part. In these figures, the same or equivalent members as those described in FIGS. 1 to 7 are denoted by the same reference numerals, and detailed description is omitted.

8 to 11, the steering handle 10
The reference numeral 41 provided in front of the hull 2 is a speaker box. This speaker box 41 is shown in FIG.
As shown in FIG. 1, the box body 42 has a bottomed cylindrical shape, a cover 43 for closing the opening of the box body 42, and a speaker SP9 housed in the box body 42, and the cover 43 is located on the rear side of the hull. Is mounted on the rear wall of the lid 21 via the seal member 44 so as to be positioned at the position shown in FIG. The cover 43 is formed of a thin plate made of a synthetic resin through which sound is easily transmitted. Also, the speaker SP9
Is fixed to the box main body 42 by a holder (not shown) in a state where the sound radiation direction is directed to the rear of the hull 2.

Reference numeral 45 denotes a cable for the speaker SP 9. The cable 45 passes through the bottom of the box body 42 and is led out into the lid 21. The lid 21 is
Since the inside is hollow as shown in FIG. 9, it is difficult for water to splash on the cable lead-out portion of the speaker SP9 facing the hollow portion. Also, a lid 21 is provided at the bottom of the lid 21.
21 for closing a maintenance opening formed at the bottom of the container
a is detachably attached.

The connecting portion between the box main body 42 and the cover 43 is provided with a sealing member (not shown) so that water does not enter the box through the space between them. However, even if the speaker box 41 adopts a watertight structure, a so-called breathing phenomenon occurs due to a temperature change or the like, and the moisture of the lid 21 penetrates through a minute gap formed in a portion where the cable 45 penetrates. May be. In order to prevent moisture that has entered the box body 42 from condensing in the box and accumulating water in the box, the box body 42
A drain pipe 46 is connected to the bottom of the container.

The lid 21 according to this embodiment is similar to the lid 21 shown in FIG.
As shown in FIG. 1 and FIG. 11, an amplifier 28 is mounted at the center of the rear wall of the hull 2 in the width direction, and speaker boxes 41 are mounted on both sides of the amplifier 28, respectively. The amplifier 28 and the speaker box 41
The meter indicated by the reference numeral 47 provided between the two is a meter. The reference numeral 48 provided outside the speaker box 42 is a rearview mirror.

Further, the lid 21 has an amplifier 28 and two speaker boxes 41 mounted on the swinging end when the lid 21 is opened and closed, and the opening margin of the amplifier 28 and the front luggage storage box 17 are closed when the lid 21 is closed. In order to prevent the impact from being applied to the elastic sealing member 49 and the like interposed between
A gas damper 50 is attached to a pivot on the hull front side. The damper 50 is provided between the lower surface of the lid 21 and the deck 3.
And interposed between them. A hinge 51 provided near the damper 50 is a hinge for attaching the lid 21 to the deck 3 so as to be freely opened and closed. Although not shown in FIG. 9, a lock device for holding the lid 21 in the closed position is also provided.

As shown in this embodiment, the lid 2
By adopting a structure in which the speaker SP9 is mounted on the rear wall on the rear side of the hull 1 so that the radiation direction of the sound is directed toward the rear of the hull 2, sound is directed toward the occupant from a position near the occupant's ear in the driving state. Radiated. Also, the rear part of the lid 21
Since the structure in which the deck 3 is supported via the elastic seal member 49 is adopted, the vibration transmitted from the deck 3 to the amplifier 28 and the speaker SP9 can be attenuated by the seal member 49.

[0049]

As described above, according to the present invention, sound is radiated toward the occupant from the front of the foot of the occupant in a driving state, so that the sound is output from the speaker not only at the time of berthing but also during cruising. A watercraft that can be heard well can be provided.

According to another invention in which the speaker is mounted on the vertical wall at the rear end of the foot step, sound is radiated toward the occupant from behind the foot of the occupant in the driving state. For this reason,
It is possible to provide a watercraft in which sound can be heard well from a speaker at the time of berthing.

According to another invention in which the speaker is mounted on the side wall inside the hull on the side of the ship, sound is radiated from the side of the occupant toward the occupant. A well-hearing watercraft can be provided.

According to another invention in which the speaker is mounted on the side wall of the seat support, the sound radiated from the speaker is reflected by the side surface on the side of the ship and propagates to the occupant side. Thus, it is possible to provide a watercraft that can easily hear sound from a speaker.

According to another invention in which the speaker is attached to the lid on the hull front side of the steering wheel, sound is radiated toward the occupant from a portion near the ear of the occupant in the driving state.
It is possible to provide a watercraft in which sound can be well heard from the speaker even when the ship is moving, not to mention at anchor.

According to another aspect of the invention, in which the partition wall is provided between the speaker and the engine, the partition wall prevents the heat of the engine from being transmitted to the speaker, so that the speaker may be heated by the heat of the engine. No watercraft can be provided.

According to another invention in which a seal member is interposed between the speaker mounting seat and the speaker, the seal member prevents water from entering the hull from the portion where the speaker is mounted. Even so, the watertightness of the hull can be kept high.

According to another invention in which the amplifier is housed in the recess between the seat and the steering wheel, the driver can operate the amplifier by opening the lid and extending his hand into the recess. Because it is possible, it is possible to easily change the volume of the sound that can be heard from the speaker during the cruising.

[Brief description of the drawings]

FIG. 1 is a side view of a watercraft according to the present invention.

FIG. 2 is a plan view of the watercraft according to the present invention.

FIG. 3 is a cross-sectional view of a hull when a speaker is mounted on a side wall on the side of a ship.

FIG. 4 is a cross-sectional view of a hull when a speaker is mounted on a seat support.

FIG. 5 is a sectional view taken along line VV in FIG. 2;

FIG. 6 is a sectional view taken along line VI-VI of the hull in FIG. 2;

FIG. 7 is a perspective view showing a mooring eye.

FIG. 8 is a side view of a watercraft in which a speaker is provided in a lid in front of a steering wheel.

FIG. 9 is a longitudinal sectional view of a lid and a luggage storage box.

FIG. 10 is a plan view of a hull front part.

FIG. 11 is a cross-sectional view of the lid support.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Watercraft, 2 ... Hull, 3 ... Deck, 4 ... Engine, 10 ... Steering wheel, 11 ... Seat, 12 ... Footstep, 12b ... Front inclined plate, 13 ... Shipboard side, 13a ...
Side wall, 14 ... Seat support stand, 21 ... Lid, 28 ... Amplifier, 29 ... Recess, 30 ... Lid, 31 ... Seal member, 3
2: Partition walls, SP1 to SP9: Speakers.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshiki Futaki 2500 Shinkai, Iwata-shi, Shizuoka Yamaha Motor Co., Ltd.

Claims (8)

[Claims] 1. A watercraft in which a deck is provided with a sheet at a central portion in a width direction of the hull and a foot step is provided on both sides of the sheet, wherein the hull is provided at a front end of the foot step on the deck. A watercraft comprising a vertical wall extending in a width direction and a vertical direction, and a speaker mounted on the vertical wall so that a sound radiation direction is directed to the rear of the hull. 2. A watercraft in which a deck is provided with a sheet at a central portion in the width direction of the hull and a foot step is provided on both sides of the sheet, a hull is provided at a rear end of the foot step on the deck. A vertical wall extending in the width direction and the vertical direction, and a speaker mounted on the vertical wall such that a sound radiation direction is directed forward of the hull. 3. A watercraft having a deck provided with a seat at a central portion in a width direction of a hull, a foot step provided on both sides of the sheet, and a side of the deck rising upward outside the foot step. A watercraft, wherein a speaker is mounted on a side wall on the inner side of the hull on the side of the hull so that a sound radiation direction is directed toward the inner side of the hull. 4. A watercraft in which a seat is provided at a central portion in a width direction of a hull of a deck, and a foot step is provided on both sides of the sheet, and a side of a ship which rises upward outside the foot step is provided. The side surface inside the hull on the side of the hull was inclined so as to gradually separate from the seat support as going upward, and a speaker was mounted on the side wall of the seat support so that the sound radiation direction was directed to the side of the hull. A watercraft that is characterized in that: 5. A watercraft in which a steering handle and a seat are provided at a center portion of a hull in a width direction of a deck and a lid having a shape protruding upward from a front side of the hull from the steering handle is provided. A watercraft in which a speaker is mounted on a rear wall of the vehicle so that a sound radiation direction is directed to the rear of the hull. 6. A watercraft having a deck provided with a seat at a central portion in a width direction of a hull, and an engine mounted below the seat, wherein a speaker is penetrated and mounted near the seat on the deck. A watercraft, wherein a partition wall is provided between a speaker and the engine. 7. The watercraft according to claim 1, wherein a seal member made of an elastic body is interposed between the speaker mounting seat and the speaker. Traveling ship. 8. The watercraft according to any one of claims 1 to 6, wherein a concave portion which opens outward of the hull is formed between the seat and the steering handle, and the concave portion is formed between the seat and the steering wheel. A watercraft comprising a lid for opening and closing a part, and an amplifier connected to a speaker is accommodated in the recess.