Nori seaweed work system ship

Abstract

The length of the re-landing path of activated laver net 30 is substantially extended without increasing the protruding length of the stern guide member 80, thereby improving the quality and harvest rate through sufficient activation treatment, and at the same time, eliminating the need for floats or the like, improving the operability, fuel consumption and working efficiency of the hull. [Solution] The protruding tip 85 of the stern guide member 80, which constitutes the re-landing path A41 along which the activated seaweed net 30 slopes downward toward the sea surface S2, is positioned at the highest position along the seaweed net guide path A over the entire length of the hull, or higher than the bridge guide member 90, thereby positioning the starting point of the re-landing path A41 at a position significantly further rearward than conventional positions.

Description

[Technical Field]

[0001] The present invention relates to a seaweed working system vessel that scoops up seaweed nets from the sea surface, treats them with chemicals (acid), and then returns them to the sea surface through the tip of a stern guide member that protrudes from the stern. [Background technology]

[0002] In Nori cultivation, a Nori work system vessel is utilized, which is capable of continuously and consistently carrying out the processes of lifting the Nori net, harvesting the Nori, activating the Nori net, and re-landing the Nori net. In a commonly used Nori work system vessel, as shown in Figure 4, for example, a Nori work system vessel 3 is driven toward a Nori net 2 stretched on the sea surface 1, and the Nori net 2 is scooped up onto the vessel using a scooping member 4 attached to the bow of the Nori work system vessel 3. An appropriate amount of Nori growing on the scooped Nori net 2 is then harvested using a Nori harvester 5 or the like, and the Nori net 2 is then introduced into a chemical treatment tank 6 containing a treatment solution consisting of various chemicals, such as an acid treatment, and the Nori net 2 is immersed in the activation treatment solution to activate the Nori net 2.

[0003] This activation treatment is carried out in response to factors that reduce the quality of seaweed, such as the adhesion of floating matter such as seawater scale and debris to the surface of the seaweed nets and the seaweed growing on them, and the proliferation of bacteria.It is a necessary treatment from the perspective of cultivating high-quality, healthy seaweed and improving the harvest rate.

[0004] Furthermore, after the seaweed net 2 has been activated in the chemical treatment tank 6, it is guided toward the rear of the seaweed work system vessel 3 by continuously self-propelling the vessel, and is guided further to the sea surface 1 further rearward through the stern guide member 7 that protrudes rearward in a cantilevered manner from the stern, where it is re-landed and returned to a state where it is spread out on the sea surface again.

[0005] When the guide path for the seaweed net 2 sent out from the chemical treatment tank 6 to reach the re-landing point P on the sea surface through the stern guide member 8 is called "air-holding path B," the seaweed net 2 is held in the air while it moves along "air-holding path B," during which time the activation treatment solution made of organic acids penetrates into the seaweed cells and kills bacteria adhering to the seaweed fronds, thereby providing an effective activation treatment. Therefore, ensuring a sufficient path length for the above-mentioned "air-holding path B" is an important factor in seaweed cultivation.

[0006] For this reason, it is common to make the span (projection length) of the stern guide member 7 that projects rearward from the stern of the seaweed work system vessel quite long, thereby extending the path length of "airborne holding path B" and ensuring sufficient airborne holding time for the activated seaweed net. On the other hand, for such a long stern guide member 7, it is common to place a buoyancy member 8 consisting of one or more floats or the like on the part that projects above the sea surface, and to hold the stern guide member 7 in a stable state by supporting it from below with the buoyancy member 8. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-112257 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0008] However, as described above, when the stern guide member 7 is elongated and a buoyant member 8 such as a float is connected to it, the resistance of waves to the buoyant member 8 becomes a large load when moving the seaweed working system vessel 3 forward, backward, or turning, which causes problems such as reduced maneuverability and fuel efficiency of the vessel. In addition, since operations such as raising and lowering the buoyant member 8 are required, the buoyant member 8 may become an obstacle to improving work efficiency.

[0009] On the other hand, it is also possible to shorten the stern guide member 7 and increase its strength, thereby eliminating the use of floats or other buoyancy members 8. However, shortening the stern guide member 7 would shorten the path length of "airborne retention path B," which is important for the penetration of the activation treatment solution, as mentioned above, i.e., the airborne retention time of the activated seaweed net, which could result in insufficient activation treatment and a decline in the quality of the seaweed.

[0010] Therefore, the present invention aims to provide a seaweed working system vessel that can substantially extend the length of the "air-holding path B" that is taken to re-land the seaweed net on the sea surface after activation processing without increasing the protruding length of the stern guide member 7, thereby achieving high-quality seaweed cultivation and a high harvest rate through sufficient activation processing, while at the same time making it possible to shorten the protruding length of the stern guide member 7, thereby eliminating the need for buoyancy members 8 such as floats and improving the hull's maneuverability, fuel efficiency, and work efficiency. [Means for solving the problem]

[0015] To achieve the above purpose Claim 1 In the invention, a chemical treatment tank 70 is provided for chemically treating the seaweed net 30 scooped up from the sea surface S1; It extends along the roof surface of the control room 20, The laver net 30 activated in the chemical treatment tank 70 is guided toward the rear of the ship. Bridge guide member 90 and the above Extending rearward from the bridge guide member 90, and a stern guide member 80 for guiding the seaweed net 30 sent out from the stern toward the sea surface S2 and re-landing it on the water. The stern guide member 80 is reciprocated in the front-rear direction to adjust the length of its projection from the stern. On the seaweed work system ship, The stern guide member 80 has an inclined guide portion 82 that protrudes obliquely upward toward the rear of the stern, and the apex of the rear end portion of the inclined guide portion 82 that extends obliquely upward is formed as the protruding tip end portion 85 of the stern guide member, In the stern guide member 80 The aforementioned The protruding tip 85 is Bridge guide member 90 The configuration is such that the sensor is positioned higher than the sensor.

[0017] Such claims 1 In the invention, the seaweed net 30 after being scooped up on the ship and subjected to activation treatment is 、 Bridge guide member 90 Yo The stern guide member 80, which is positioned higher than the stern guide member 80, forms a vertex at a downward incline toward the sea surface S2. So, the seaweed net 30 Because the "re-landing path A41" is formed, the starting point of the "re-landing path A41" has been moved to a much further rearward position, at the protruding tip 85 of the stern guide member 80, compared to the conventional case in which the apex of the "re-landing path" is the aft edge of the operation control room, which is located at a lower position. And, by the amount that the starting point has been moved rearward, the length of the air-holding path A4 from the activation treatment of the seaweed net 30 to its re-landing, i.e., the air-holding time of the seaweed net 30, is increased, and the activation treatment solution is allowed to penetrate sufficiently, resulting in a good activation treatment effect.

[0018] In addition, the seaweed net 30 is pressed from above with a stronger force against the protruding tip 85 of the stern guide member 80, which is positioned higher than before, so the sliding friction of the seaweed net 30 increases, increasing the tension of the seaweed net 30 and causing the seaweed net 30 to reach the sea surface in a posture closer to horizontal. From this point of view, the length of the airborne retention path A4 from the activation treatment of the seaweed net 30 to its re-landing on the water is extended, and the increased airborne retention time of the seaweed net 30 promotes the penetration of the activation treatment solution, resulting in a good activation treatment effect.

[0019] Furthermore, within the range where such a good activation treatment effect can be obtained, it is possible to shorten the length of the stern guide member 80 that protrudes above the sea surface from the stern, making it possible to eliminate buoyancy members such as floats that support the stern guide member as in the past, thereby improving the maneuverability and fuel efficiency of the seaweed work system vessel.

[0020] On the other hand, claims 2 In the invention, 1 The stern guide member 80 described in the above is configured to be a stainless steel pipe member.

[0021] Such claims 2In the present invention, the stern guide member 80 has improved slidability with respect to the seaweed net 30 and rigidity compared to conventional stern guide members made of resin or the like, and therefore provides better actions and effects. [Effects of the Invention]

[0022] As described above, the present invention provides a method for preventing the activated seaweed net 30 from being caught in the water by using the protruding tip 85 of the stern guide member 80 which constitutes the re-landing path A41 having a downward slope toward the sea surface S2. 、 By positioning it higher than the bridge guide member 90, the starting point of the re-landing path A41 is positioned significantly further back than before, and the distance of the air-holding path A4 until the net seaweed 30 re-lands, i.e., the air-holding time until the seaweed net 30 re-lands, is increased, thereby promoting the penetration of the activation treatment liquid, thereby cultivating high-quality, healthy seaweed and improving the harvest rate.At the same time, by shortening the protruding length of the stern guide member 80, buoyancy members such as floats are no longer necessary, thereby improving the hull's maneuverability, fuel efficiency, and work efficiency. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a schematic side view illustrating an enlarged view of the stern portion of a seaweed working system vessel according to one embodiment of the present invention. FIG. [Figure 2] 2 is a side view illustrating a schematic representation of the entire seaweed working system vessel according to one embodiment of the present invention, including the stern portion shown in FIG. 1.

[0023] FIG. [Figure 3] FIG. 3 is a schematic plan view illustrating the seaweed working system vessel shown in FIG. 2. [Figure 4] FIG. 1 is a side view illustrating a conventional seaweed working system vessel. BEST MODE FOR CARRYING OUT THE INVENTION

[0024] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0025] A propulsion device such as a screw (not shown) is disposed at the stern of the seaweed working system vessel 10 according to one embodiment of the present invention shown in Figures 1 to 3, and the propulsion device enables the seaweed working system vessel 10 to self-propel on the sea. Hereinafter, the direction in which the seaweed working system vessel 10 self-propels will be referred to as "forward," and the opposite direction to self-propelling will be referred to as "rearward."

[0026] In such a seaweed work system vessel 10, an operation control room 20 is located in the rear (stern) part of the upper part of the hull where the deck is formed, where an operator boards and steers the vessel and performs various operations on the seaweed nets. The operation control room 20 issues commands to the seaweed work system vessel 10, which then operates on its own to scoop up seaweed nets 30 (see the two-dot chain line in Figures 1 and 2) on the sea surface S1 onto the vessel, and then guides the net from the bow to the stern, before returning it to the sea surface. A "seaweed net guide path A" is provided that extends the entire length of the vessel.

[0027] The total length of the above-mentioned "seaweed net guide route A" is a route that runs from the sea surface S1 in front of the bow through the entire length of the hull to the sea surface S2 behind the stern, and in detail consists of the following four guide routes A1 to A4. A1: The "scooping route" for scooping up the seaweed net 30 stretched on the sea surface onto the boat and sending it backward. A2: The "Nori picking guide route" for picking and storing Nori leaves from the Nori net 30 sent out from the "Scooping route A1" A3: "Activation treatment route" in which the harvested seaweed net 30 is immersed in a chemical to activate it. A4: The "airborne maintenance route" that returns the activated seaweed net 30 from the stern to the sea surface S2 via the upper part of the operation control room 20 and then lands it on the water again.

[0028] Each of the routes A1 to A4 that make up the "seaweed net guide route A" spanning the entire length of the hull is provided with equipment having the functions required for that route. Specifically, first, the "scooping path A1" which constitutes the forward area of ​​the "seaweed net guide path A" is provided with a scooping member 40 which has the function of scooping up the seaweed net 30 stretched out on the sea surface S1 onto the ship using an appropriate installation structure. Also, behind it, on the "Nori Harvesting Guide Route A2," there is a Nori Harvesting Machine 50 that cuts and harvests parts of the Nori leaves growing on the Nori Net 30, and a Nori Tank 60 that stores the harvested Nori leaves. Furthermore, an acid treatment tank (chemical treatment tank) 70 for storing chemicals such as acid is provided in the "activation treatment path A3" behind it. Furthermore, the "air-holding path A4" which constitutes the rear area of ​​the "seaweed net guide path A" is provided with a stern guide member 80 which extends rearward from the operation control room 20 described above.

[0029] The devices provided on each of these paths A1 to A4 will be outlined below.

[0030] [About the scooping member 40] The scooping member 40 provided on the "scooping path A1" is a frame-shaped structure made entirely of a stainless steel pipe frame, and has an outer frame member 41 that protrudes forward from the bow of the seaweed working system vessel 10 in a roughly U-shaped plan view, and a lattice-shaped inner frame member 42 is provided in the inner area of ​​the outer frame member 41.

[0031] The tip of the scooping member 40 is submerged in the seawater when in use (see FIG. 2), and is configured to scoop up the seaweed net 30 onto the hull by self-propelling the seaweed operation system vessel 10 forward while the submerged tip is submerged under the seaweed net 30 stretched out on the sea surface. The scooping member 40 extends cantilevered from a slide part 43 that reciprocates back and forth by the driving force of a motor (not shown), and as the slide part 43 moves back and forth, the tip of the scooping member 40 reciprocates between an operating position where it is submerged in the seawater and a storage position where it is retracted above the hull.

[0032] The reciprocating movement of scooping member 40 at this time may be performed manually. Also, scooping member 40 may be supported so as to be rotatable, and may be held so as to be able to rotate or move forward and backward by, for example, the wire unwinding and winding operations.

[0033] [About the Nori Picking Machine 50] The Nori plucking machine 50, located on the "Nori plucking guide path A2" immediately after the scooping member 40, is equipped with a rotary cutter 51 along a base extending in the width direction of the ship. The rotary cutter 51 is rotated by a drive unit (not shown), and by rotating the rotary cutter 51 below the Nori net 30, it is possible to harvest a portion of the Nori fronds growing on the Nori net 30.

[0034] To efficiently harvest laver using this laver harvester 50, the base is provided with an adjustable guide bar (not shown). This guide bar is designed to allow the laver net 30 to be spaced at any distance from the rotary cutter 51, allowing adjustment to optimize the amount of laver leaves picked.

[0035] The Nori leaves picked by the Nori picking machine 50 are sent to and stored in the inner space of the Nori tank 60, which is located immediately behind the Nori picking machine 50. When the Nori work system ship 10 returns to port, the Nori stored in the Nori tank 60 is collected through a collection pipe connected to the Nori tank 60 from the outside.

[0036] [About the acid treatment tank (chemical treatment tank) 70] Furthermore, the "activation treatment path A3" forms a guide path for the Nori net 30 from the rear of the above-mentioned Nori tank 60 to the front of the operation control room 20, and this "activation treatment path A3" is provided with a shallow, pool-shaped acid treatment tank 70 as a chemical treatment tank. The acid treatment tank 70 stores an acid treatment liquid made of organic acids or the like as a chemical treatment liquid. Then, with the acid treatment liquid stored in the acid treatment tank 70, the Nori net 30 from which the Nori fronds have been harvested is introduced into the tank, and the Nori net 30 is immersed in the acid treatment liquid, thereby subjecting the Nori net 30 to activation treatment.

[0037] The activation treatment at this time is intended to remove floating matter and germs such as seawater scale and debris that are attached to the surface of the seaweed net 30 and the seaweed growing on the seaweed net 30.It is an important process that aims to simultaneously improve the quality and harvest rate of the seaweed by eliminating factors that reduce the quality of the seaweed through the activation treatment, and the activation treatment is carried out while the seaweed net 30 is stably supported by the pressure member 71 located in the upper area of ​​the acid treatment tank 70.

[0038] [Regarding the bridge guide member 90] Furthermore, in the "air-holding path A4" formed in the area toward the stern from the aforementioned operation control room 20, a bridge guide member 90 is arranged that extends from the front of the operation control room 20 along the upper part of the roof surface of the operation control room 20, and a stern guide member 80 that extends rearward from the bridge guide member 90.

[0039] Of these, the bridge guide member 90 is formed from a stainless steel lattice-like pipe frame member that slidably supports from below the seaweed net 30 that has been activated in the acid treatment tank 70, and includes outer frames 91, 91 extending along both sides in the width direction of the ship, and a plurality of inner frames 92 that connect the outer frames 91, 91 together in a generally lattice-like pattern on the roof surface of the operation control room 20. The bridge guide member 90 has a guide function of guiding the seaweed net 30 that has been activated from the front of the operation control room 20 to above the roof surface of the operation control room 20, and further to the rear of the operation control room 20.

[0040] The outer frame 91 described above extends diagonally upward from the lower end of the front window in the vicinity of the front window of the operation control room 20, and then extends substantially horizontally in the vicinity of the roof surface of the operation control room 20 from above. The rear end 93 of the outer frame 91 of this bridge guide member 90 is located in a position that is substantially aligned with the rear edge 21 of the roof surface of the operation control room 20 in the fore-and-aft direction of the hull.

[0041] Such bridge guide member 90 has the function of guiding the seaweed net 30, which has been scooped up from the sea surface and subjected to activation treatment as described above, through the bridge guide member 90 and rearward along the roof surface from the front window of the operation control room 20, and then handing over the seaweed net 30 to the stern guide member 80 at the rear.

[0042] [Regarding the stern guide member 80] The stern guide member 80, which is arranged on the "aerial holding route A4" like the bridge guide member 90 described above, has a frame structure made of stainless steel pipe-like members that protrude in a cantilevered manner from the stern of the seaweed working system vessel 10 toward the sea surface behind. Specifically, it has a horizontal guide section 81 that extends approximately horizontally rearward from just below the rear end edge 93 of the bridge guide member 90 described above, and an inclined guide section 82 that protrudes continuously diagonally upward toward the rear from the rear end of the horizontal guide section 81.

[0043] A pair of stern guide members 80, each consisting of such a horizontal guide section 81 and an inclined guide section 82, are arranged on both sides of the ship's width, and these two stern guide members 80, 80 are connected to each other by a number of inner frame sections 83 (see Figure 3) extending in the ship's width direction. These stern guide members 80 have the guide function of guiding the seaweed net 30 that has been sent rearward from the rear end edge 93 of the bridge guide member 90 described above, rearward toward the stern, and the guide function of guiding the net further rearward from the stern onto the sea surface S2 so that it can land on the water again.

[0044] Of these, the horizontal guide section 81 extends approximately horizontally at a position slightly below the roof surface of the aforementioned bridge guide member 90 and the operation control room 20, and further below this horizontal guide section 81, a reinforcing frame 84 of the stern guide member 80 is provided.

[0045] As described above, the inclined guide section 82 continues from the rear end (left end in Figure 1) of the horizontal guide section 81 and protrudes diagonally upward toward the rear, and this inclined guide section 82 extends to an area above the bridge guide member 90 and the roof surface of the operation control room 20. The apex of the part of the inclined guide section 82 that extends diagonally upward forms the protruding tip section 85 of the stern guide member 80. This protruding tip section 85 of the stern guide member 80 has a side shape that extends downward in a substantially arc-like curve, and extends diagonally downward from its lower end in a substantially straight line to form a frame structure that is continuous with the reinforcing frame 84 described above.

[0046] At this time, the protruding tip 85, which is the apex of the stern guide member 80, is located at a position higher in the height direction from sea level S2 than the bridge guide member 90 and the roof surface of the operation control room 20. The position at which the protruding tip 85 of the stern guide member 80 is located is the highest position in the entire route of the "seaweed net guide route A" that extends over the entire length of the hull.

[0047] In a seaweed working system vessel 10 having such a configuration, seaweed nets 30 on the sea surface S1 are scooped up onto the vessel by scooping members 40, harvested by seaweed harvesting machines 50, and then immersed in an acid treatment tank (chemical treatment tank) 70 for activation treatment.

[0048] Then, when the activated seaweed net 30 is sent to the "airborne holding path A4" behind the operation control room 20, as shown by the two-dot chain line in Figure 1, the seaweed net 30 sent out from the rear edge 93 of the bridge guide member 90 is sent to the protruding tip 85 of the stern guide member 80 by the guiding action of the stern guide member 80, and proceeds downhill from the protruding tip 85 to the sea surface, where it lands again on the sea surface S2 behind the stern and is restored to its stretched state on the sea surface.

[0049] At this time, the protruding tip 85 of the stern guide member 80 is at the highest position in the entire "seaweed net guide path A" that runs along the entire length of the hull, and is also at the highest position than the aft edge 93 of the bridge guide member 90 or the aft edge 21 of the operation control room 20, so the protruding tip 85 of the stern guide member 80 becomes the apex of the path that guides the seaweed net 30. In other words, the "air-holding path A4" that forms the rear guide path from the above-mentioned operation control room 20 has in its rear half a "re-landing path A41" that starts from the protruding tip 85 of the stern guide member 80, which is at the highest position in the path, and extends downward from there to the sea surface S2.

[0050] In contrast, in the "re-landing route B41" of the conventional seaweed operation system vessel shown by the dashed line in Figure 1, the stern guide member 7 is positioned at a low position in the height direction from the sea surface, and the protruding tip 71 of the stern guide member 7 is in light contact with a small pressure from above at a midpoint of the downward sloping route of the seaweed net 2 toward the sea surface.

[0051] As a result, the starting point of the "re-landing path B41" in the conventional ship is located at the aft end 93 of the bridge guide member 90 or the aft edge 21 of the operation control room 20 in this embodiment. The starting point of the "re-landing path B41" in this conventional ship is located significantly further forward than the protruding tip 85 of the stern guide member 80, which is the starting point in this embodiment described above, and the length of the "airborne holding path B4" from the acid treatment tank (chemical treatment tank) to the re-landing point is shortened by the amount that it is located significantly further forward.

[0052] Therefore, in order to make the path length of "airborne holding path B4" in the conventional ship approximately the same as "airborne holding path A4" in this embodiment, a stern guide member 7 with a length that compensates for the shortened path length is required. Specifically, the protruding length of the stern guide member 7 in the conventional ship must be extended at least to the rear position indicated by reference symbol 7' in Figure 1, or to a position further rearward. In order to stably hold such a long stern guide member 7', it becomes necessary to support it from below using a buoyancy member such as a float, as mentioned above.

[0053] In this way, in this embodiment, the starting point of the "re-landing path A41" that leads the activated seaweed net 30 to the sea surface S2 behind the stern has been moved to the protruding tip 85 of the stern guide member 80, which is located significantly further rearward than in conventional ships.As a result, the path length of the "air-holding path A4" until the activated seaweed net 30 is re-landed is significantly longer than the path length of the "air-holding path B4" in conventional ships, due to the position of the starting point of the "re-landing path A41" being moved rearward.

[0054] Furthermore, in this embodiment, the starting position of the "re-landing path A41" is set higher than in the past, so the pressing force from above of the seaweed net 30 against the protruding tip 85 of the stern guide member 80 is stronger, and the sliding friction of the seaweed net 30 increases. As a result, the tension of the seaweed net 30 in the "re-landing path A41" between the protruding tip 85 of the stern guide member 80 and the sea surface is strengthened, and the seaweed net 30 is pulled strongly in the horizontal direction. Therefore, the angle θ (see FIG. 1) at which the net seaweed 30 moves rearward away from the protruding tip 85 of the stern guide member 80 becomes smaller, and the seaweed net 30 moves in a nearly horizontal state. From this point of view, the path length of the "airborne holding path A4" until the net seaweed 30 re-lands on the water is effectively extended.

[0055] As described above, in this embodiment, the starting position of the "re-landing path A41" of the seaweed net 30 is shifted further rearward than in the conventional ship, and the seaweed net 30 in the "re-landing path A41" is pulled more strongly horizontally, so the path length of the "air-holding path A4" until the net seaweed 30 re-lands is substantially extended more than in the conventional ship.As a result, the air-holding time until the seaweed net 30 re-lands is increased, the penetration of the activation treatment liquid is promoted, and a good activation treatment effect is obtained.

[0056] Furthermore, within the range where such a good activation treatment effect can be obtained, it is possible to shorten the length by which the stern guide member 80 protrudes from the stern, making it possible to eliminate the need for a conventional structure that supports the stern guide member using a buoyancy member such as a float, thereby improving the maneuverability and fuel efficiency of the seaweed work system vessel.

[0057] The stern guide member 80 in this embodiment is configured to be able to move back and forth in the fore-and-aft direction by unwinding and winding a wire (not shown), but it is possible to adjust the length of its protrusion from the stern as appropriate depending on the situation to obtain the optimal condition.

[0058] Furthermore, the present invention is not limited to the above-described embodiment, and various modifications are possible as needed. For example, the present invention may be applied to known chemical treatments other than acid treatments that promote healthy growth of laver, such as treatments using electrolyzed water or concentrated saline water.

[0059] Furthermore, although the seaweed work system vessel 10 in the above-described embodiment is equipped with a mechanism for harvesting seaweed grown on the seaweed net 30, the present invention is not limited to such a configuration, and it is also possible to configure the vessel such that, for example, the seaweed net 30 is not harvested but only activation treatment is performed using a chemical treatment solution. [Industrial Applicability]

[0060] As described above, the present invention can be widely applied to various system ships for carrying out various seaweed-making operations. [Explanation of symbols]

[0061] S1 Sea surface ahead of the bow S2 Sea surface behind the stern A Seaweed Net Guide Route A1 scooping route A2 Seaweed picking guide route A3 active processing pathway A4 Air-holding Route A41 Re-landing route 10 Seaweed Work System Ship 20 Operation and Control Room 30 seaweed net 40 Scooping member 50 Nori plucking machine 60 Seaweed Tank 70 Acid treatment tank (chemical treatment tank) 80 Stern guide member 85 Protruding tip 90 Bridge guide member 93 Rear edge of bridge guide member

Claims

1. A chemical treatment tank that applies chemical treatment to the seaweed nets scooped up from the sea surface; a bridge guide member extending above the roof surface of the control operation room and guiding the seaweed net activated in the chemical treatment tank toward the rear aft side; a stern guide member extending rearward from the bridge guide member and guiding the seaweed net sent out from the bridge guide member toward the sea surface and re-landing it on the water; The device is provided with: In the seaweed working system ship, the stern guide member is reciprocated in the fore-and-aft direction to adjust the length of its projection from the stern, The stern guide member has an inclined guide portion that protrudes obliquely upward toward the rear of the stern, and the apex of the rear end portion of the inclined guide portion that extends obliquely upward is formed at the protruding tip end of the stern guide member, A seaweed working system ship characterized in that the protruding tip of the stern guide member is positioned at a higher position than the bridge guide member in the height direction from the sea surface.

2. 2. A seaweed working system ship according to claim 1, wherein the stern guide member is made of a stainless steel pipe member.

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