Showing posts with label fishing boats. Show all posts
Showing posts with label fishing boats. Show all posts

Thursday, June 4, 2026

Download Fishing Craft and Fisheries of Hong Kong by British Naval Intelligence

Line art sail plan and deck arrangement, and monochrome photo of fishing junk
The Ku tsai teng, a Hong Kon junk used for purse sein fishing. Click the images for an expanded view. (Source: B.R. 1050B, p.25, figs. 20-21)

Now available for free download is The Fishing Craft and Fisheries of Hong Kong (B.R. 1050B). Published in 1944 "for official use only," it describes the craft and their uses, illustrating them with line drawings of deck arrangements and longitudinal hull cross-sections, sail plans, and photos. It documents fishing methods in unusual technical detail with informative illustrations, like the one below. It's an excellent resource.

Line art depicting trawling method in two views: one a perspective view showing above and below water surface; other is a top-down view of same procedure
One of several trawling methods illustrated in The Fishing Craft and Fisheries of Hong Kong (Source: B.R. 1050B, p.33, figs. 25-26)

The Fishing Craft and Fisheries of Hong Kong is the second from a series published by the Naval Intelligence Division of the British Admiralty that we are making available thanks to a friend who has been assiduously scanning these and other rare and out-of-print books about Asian watercraft so that we can offer them free to our readers. Here is the list of free downloadable books.

Monday, August 5, 2024

Fishing Sampans in Taiwan - free download

A Taiwanese fishing raft of bamboo construction (Han-po Liu, 1963, fig. 37).

Fishing Sampans in Taiwan by Han-po Liu (1963), a wonderful little book published by the Taiwan Fisheries Bureau, is now available on our page of free downloads of complete books about vernacular watercraft of China and southeast Asia. 

Published as a dual-language (Chinese and English) edition, Fishing Sampans in Taiwan includes not only sampans per se, but also small junk-style boats and rafts. It begins with a summary of the island's fishing fleet and description of types, including numbers of powered and unpowered boats and their catches, general construction features, design coefficients, geographic distributions, fishing methods, and losses by type, It then presents the boats themselves, organised by district, using photos and good-quality construction and lines plans.

Many thanks to the contributor who wishes to remain anonymous for the scans of this book.

Construction plan of a bamboo fishing raft (Han-po Liu, 1963, fig. 44).


NOTE: A previous version of this post named the scans' contributor incorrectly.

Friday, June 7, 2024

Book review: Classic Wooden Fishing Boats of the Vietnamese Coast

cover image of book Classic Wooden Fishing Boats of the Vietnamese Coast by Ken Preston

Classic Wooden Fishing Boats of the Vietnamese Coast: Their Design, Construction, Rigging and Fisheries

by Ken Preston

2019

328 pages

Vietnam Women’s Publishing House, Ha Noi

ISBN 978-604-56-7858-9 

When Ken Preston served in the US Army in Vietnam, he saw little of the country’s vernacular boats. But decades after the US withdrawal and the end of the war, he travelled back to Vietnam for pleasure and was fascinated by the variety of boats he saw and their methods of construction. Starting in 2005, he returned year after year, spending weeks at a time traveling the country on a small motorcycle, taking thousands of photos of boats and boatyards, and talking to boatbuilders and fishermen. His book, Classic Wooden Fishing Boats of the Vietnamese Coast, is the result, and a fine one it is.

The book is organized unconventionally but with an undeniable logic. The very brief first chapter, “Wooden Boats and Nautical Culture in Vietnam, Past and Present”, is more like a second Introduction, barely mentioning thousands of years of boat history prior to the middle of the 20th century. From that time forward, though, it describes how the local fleet was documented by French colonial observers and, later, by the US government, and how it changed rapidly to leave behind much of its traditional roots and adopt larger, more Western-like designs and diesel engine power.

The book really hits its stride in Chapter 2, “Vietnamese Wooden Boat Designs,” which describes the basic structure of traditional wooden fishing boats, some of which are still in use, and contrasts it to the structure of newer, larger “modern fishing vessels” (MFVs). The latter, although constructed plank-on-frame by methods not dissimilar to Western methods, are still different enough in design from Western vessels to be of interest. The chapter also discusses how traditional and modern methods are sometimes combined, and shows how even fairly large boats are built in temporary and ad-hoc shipyards with a minimum of tools and infrastructure. The building sequences for both types of vessels are described and illustrated in good detail.              

Man squatting on bottom boards of boat under construction, with another boat whose construction is more advanced in the background.
A boatbuilder fitting the port side planks of a traditional fishing boat. The fully-assembled side will later be lifted and attached to the already-framed bottom, visible in the background.

Chapter 3, “Seagoing Baskets,” looks at small fishing boats where part or all of the hull is formed of split bamboo basketwork. Some readers may be familiar with Vietnam’s iconic round basket boats that may be paddled, rowed or – surprisingly often – powered with small outboard or even inboard engines (see previous post on round basket boats). Less well known are small canoe-shaped basket boats with light bamboo gunwales (see previous post for more on these narrow basket boats) and larger, oval-hulled basket boats built with heavy rectangular frameworks of full-round bamboos around their top perimeter, many with cabins, also of basketwork (see previous post on round basket boats of Tonkin Bay). Then there are even larger, heavier open boats, almost indiscernible from plank-built boats due to the substantial strakes that sheath their topsides (see cover image at top).

Three basket boats in foreground, with other fishing boat types in background
These large, round basket boats have inboard engines. Boats like this are used both for beach fishing and as dinghies for larger fishing boats. 

Chapter 4, “Boat Building techniques” takes the reader step-by-step through the main procedures of wooden hull construction, with excellent detail on tools and tool-use techniques. Chapter 5, “Modern Fishing Gear on the Vietnamese Coast”, describes the many methods of fishing practiced, including drift nets, seines, lift- or dip-nets (called “push aheads” due to their mounting on the bow of boats), longlines, squid gear, and more. Preston describes which boat types employ which types of gear and the basics of their use.

Comprising just shy of half the book’s page count, “A Trip Up the Coast: From Phu Quoc Island to Mong Cai” is the final chapter. It is a valuable “moment-in-time” record of boat building facilities and fishing boat use in dozens of major and minor fishing ports. Because Preston visited some of the ports numerous times over the course of years, he has sometimes documented the pace of change and shown how quickly Vietnam is developing in some areas.

Classic Wooden Fishing Boats of the Vietnamese Coast is a lovely, coffee-table size volume, produced entirely in color, and wisely formatted in landscape mode, which is by far the better choice for presenting photos of boats and ships. Preston’s photos are lively and colorful, and most do an excellent job illustrating the matter at hand. For the few that don’t come up to that standard, anyone familiar with photographing industrial workplaces will acknowledge that ideal composition and lighting can be elusive, and Preston has done a fine job working in challenging conditions. One must admire his dedication to the project and the opportunities he made for himself to hang around boatyards and gam with builders and fishermen. He has produced a valuable body of ethnographic data that captures fishing and boatbuilding practices as they were during the early 21st century and will never be again.

Given its value to vernacular boat students and enthusiasts, it is unfortunate that Classic Wooden Fishing Boats of the Vietnamese Coast is so difficult to obtain. It was published only in Vietnam and never properly distributed in the West. One hopes a Western publisher will pick it up someday or that it will be made available by other means.

 

Wednesday, May 16, 2018

Madan Boat Use


In the prior post we examined the watercraft of the Madan or Marsh Arabs. Now we'll look at how the Madan used those boats -- particularly the plank-built ones. As in the last post, all the photos and essentially all the content are from The Marsh Arabs by Wilfred Thesiger.

Almost all of the economic activities of the Madan depended upon their boats. The most important were raising buffaloes, fishing, wildfowling, reed cutting, mat-making, and smuggling. Others included raising sheep and goats and growing wheat, barley, and rice. Some entire communities specialized in boat building. 

Madan boatman with reed mats ready for export
Huge stacks of rolled mats at the extreme right and left of the image are ready for export downstream. (Click any image to magnify.)
Mat-making relied upon the reeds and rushes that were ubiquitous in the marshes. Two passages from The Marsh Arabs are illustrative:
“We passed . . . a large two masted boat loaded high with reed mats, being laboriously poled toward the Tigris. Later we passed a great raft made of dry reeds. Forty feet long and ten feet high, it was aground and temporarily abandoned. When the water-level rose, this stack of reeds would be floated downstream, perhaps as far as Basra, and there broken up and sold.”
and
“The Nuafil [one of the many tribes Thesiger visited] kept some buffaloes, but their livelihood depended on the weaving of mats, which they exported in great numbers. Large sailing boats, like the one we had already seen, fetched the mats when the water was deep enough.”
Although the Madan, as devout Moslems, do not eat pig, they frequently mounted hunting expeditions in which several boatloads of men would go after the wild pig that abounded in the marshes and played havoc with their crops. Some of the hunting may have been done for the pure sport of it, however.

Madan boats on market day
Boats congregating in great numbers on market days.
Aside from economic uses, virtually every aspect of life in the marshes depended upon boats. All visits to other villages, for courting, weddings, funerals, the prosecution of feuds, visits by itinerant circumcisers, etc., were made by boat. As few of the reed islands or marsh dwellers had privies, the call of nature was often answered by hopping into a canoe, paddling a short way off, and squatting over the side. Drinking water, by the way, was drawn from the same source.

Madan boat carrying a load of passengers
Even with full load of passengers, there are still several inches of freeboard on this balam. Three men are paddling: one in the bow, and two (on opposite sides) in the stern.
Thesiger described a scene in which a family was moving their settlement by boat:
“Two boys in a canoe urged on half a dozen buffaloes, following behind a balam that was paddled by an elderly man and another boy, who made yodelling cries to encourage the swimming animals. A woman and three small children, one of them wearing nothing but a silver collar round his neck, shared the back of the boat with two buffalo calves, a kitten, and a lot of hens. The front was piled high with their belongings, including the dismantled framework of their house, reed mats, water jars, cooking pots, sacks of grain and a pile of quilts. A dog stood on top of all this between the wooden legs of a churn, and barked at us as we edged past.”
As a social convention, it was customary for a man in boat to greet a man on shore first, rather than the reverse, and for boats traveling downstream to issue the first greeting to those traveling upstream. Perhaps the first of these traditions arose because a person traveling was more likely to have news for one at home than vice-versa, or that a stranger passing by one’s home was viewed as a potential threat, so it behooved the boatman to be the first to express good intentions. As to the second tradition, perhaps those traveling downstream were assumed to be coming from home, while those traveling upstream were returning from market. News from home might have been valued more highly than news from the city. These are just speculations.

Fishing methods

Fishing, much of it done from boats, was the primary economic activity of many individuals and tribes in the marshes, and an important secondary one for others. Some fished on a subsistence basis, while others caught fish for market. The most common catch seems to have been different species of barbel, some of which are types of catfish, others being related to them. Several fishing methods were used, including spearing, netting, and poisoning. Also noodling – more on that in a bit.

Among those who used nets, differing tribes favored different types of nets and different associated methods, including the use of cast nets from shore, setting a net across a flowing channel, wading with a scoop net, and setting seines either from boats or by wading. Another shore-based fishing method involved setting up a barrier of reeds in a shallow area of current to provide fish with a resting place. When fish bumped up against the reeds, their movement alerted men waiting on the shore with spears

Fish poisoning was done in winter and early spring, before the water began to rise. Datura, a poison derived from a genus of plants of the same name, was purchased from local merchants, mixed with flour and chicken droppings or inserted into freshwater shrimps which were cast upon calm stretches of water. Fish ate the bait and were stupefied by the datura, causing them to float to the surface where they could be easily collected. This was a more productive method of fishing than spearing.

Noodling (a Southern United States term for catching catfish by hand) was also practiced, particularly for a large fish called gessan, which was probably a type of barbel. Gessan would shelter beneath floating islands of reeds, where they were safe from spear and net. They were targeted by teams of two men in a canoe. One man stayed in the boat while the other dove beneath the island with a rope tied around his leg. The swimmer would grab the fish (probably by the gills, if Southern practice is an indication) and be pulled back out by the man in the canoe.

Naturally, there was rivalry between different cultures and different tribes living in the marshes, and while this was probably based on simple “tribalism” (in the modern, nonanthropological sense), it manifested itself in a focus upon each others’ fishing habits. To quote Thesiger again:
“Far out on the lake, Berbera were fishing from boats. We could hear the beating of tins, and the smack of poles on water as they drove the fish into their nets. The Madan had a profound contempt for the Berbera and, except that they would eat with them, despised them hardly less than the Sabeans who were at the very bottom of the social scale. Yet no tribesman ever suggested to me that the Berbera were of a different origin. The prejudice was solely against their occupation. At first sight this appeared to be illogical, since the Madan themselves caught fish. But the Berbers netted fish to make money, whereas the Madan speared fish for food.”
This was changing however, and Madan were beginning to sell both fish and buffalo milk, which they previously had not done, instead keeping both commodities solely for their own use. Thus, when Thesiger visited, the Madan’s stated basis for their prejudice was in the process of shifting away from the occupation itself to the Berberas’ different method of fishing.

Madan fishing with spears from boats
Madan fishing with spears, their boats proceeding in line abreast to herd fish before them. One man paddles in the stern in each canoe. 

Of all the fishing methods employed by the Madam, the greatest prestige was associated with spearing – at least among the tribes with which Thesiger spent the most time. “In spring, before the water rose, the Madan collected in parties of forty or fifty canoes. They swept up and down a lagoon, in line and some four or five yards apart, while the spearmen tried to impale the fish as they broke back under the canoes. In summer they speared fish at night by the light of reed torches.”

During the height of fishing season, hundreds of boats might work a single lake at once. Merchants would set up buying stations on the shore, buying boatloads of fish, packing them in ice, and sending them by truck to Baghdad. (Fish were also salted.) There was fierce competition between groups employing spearing and netting methods, racing each other to the next favored spot and intentionally blocking each other’s access. Thesiger even described spearmen poaching a seine net already full of fish and in the process of being drawn in. This would seem to be strong evidence of the superiority of net fishing, but the spear-wielding Madan evidently didn’t see it that way.

Monday, March 5, 2018

Traditional Fishing Schooner Launched in Northern Vietnam

After Ken Preston saw my previous post about Vietnamese basket boats, which included one of his photos from his website Boats and Rice, he contacted me about another interesting and beautiful Vietnamese boat he was privileged to sail on recently.
Sailing fishing boat, Quang Yen, Vietnam. Photo Ken Preston.
Newly launched traditional fishing boat, Quang Yen, Vietnam. Photo: Ken Preston. Rights reserved/used by permission. (Click to enlarge.)
This type of sailing fishing boat from northern Vietnam went out of use some decades ago with the proliferation of engines. Ken hesitates to call this boat a "replica," because it was built authentic to tradition in every respect by an 11th-generation boatbuilder who worked on them many years ago (and who continues to do business building more contemporary wooden fishing boats). It simply IS one of the type, albeit separated by many years from the rest. 



The video shows the boat getting under way and looking quite lovely sailing up- and down-wind. The video was shot by one of Mr. Chan's sons; Ken edited it and added the explanatory text.

The (apparently unnamed) boat was built in the boatyard of Mr. Le Duc Chan of Quang Yen, a short distance upstream of Halong Bay. It was commissioned by Dr. Nguyen Viet, an archaeologist with an interest in Vietnam's maritime heritage. Dr. Viet caused the construction of the boat to be scrupulously recorded in still images and video, with the assistance of a naval architect who also documented the boat and its construction for legal purposes.

The boat is of a type that would have been owned (and lived on?) by a family and used for commercial fishing. Dr. Viet's version is true to the original, lacking modern accommodations belowdecks. It is 34.6' LOD, 27.3' at the waterline, with a maximum beam of 11.7', a board-up draft of just 18", and a daggerboard-down draft of 5.4'. It is junk-schooner rigged, and according to Ken's lengthy, colorful blog post, it can be easily handled by a crew of two: one at the helm and mainsheet, another at the foresail. Ken describes its sailing behavior as extremely well-mannered, getting under way, answering the helm, coming about, dropping sail, and docking reliably and with a total lack of fuss.

Ken's article about the boat will appear in the May issue of WoodenBoat magazine. He also has a book about Vietnamese fishing boats, with some 500 photos plus text, coming out soon from Women's Publishing House of Ho Chi Minh City. An English-language edition will appear this summer, to be followed by a Vietnamese translation. Neither appears on the publisher's website at the time of this writing.

Friday, December 22, 2017

A Fishing Canoe from the Ecuador Coast

Continuing our series on boats and related artifacts that we observed recently at museums in Ecuador, we'll look now at a examples from a very fine exhibit of the country's diverse cultures at the Museo Pumapungo in the lovely city of Cuenca. (For the first post in this series, see this article about an Amazonian logboat.)

The first item, the canoe that follows, was built by cholo pescadores -- literally "mixed-race fishermen" -- on the Pacific coast. Like many Ecuadorians, cholo are of mixed Indian and Spanish descent. The more common term for that genetic mixture in Ecuador and elsewhere in Latin America is mestaje (i.e., mestizo, literally meaning "miscegenation," but used in a nonperjorative sense to mean simply "mixed race"), but the cholo pescadores are considered a distinct culture. What follows is my sadly unfluent translation of the exhibit card, the only information provided about the boat and related items:
Cholo Pescador  
They are so called because of mixed Indian/Spanish ancestry and their primary economic activity. They live at the seashore in small towns or compounds.  
Fishing in canoes and bongos*, using cast nets, trammel nets and other devices, is done at night or at dawn, as a group, and they return at noon. They tend to be organized in cooperatives and are abandoning traditional techniques and boats.  
The mangrove is an important part of the coastal ecosystem; However, in the places where the fisherman lived traditionally, shrimp farms and logging are now causing major alterations in the life of the inhabitants and in the natural balance.  
The cholo pescador's language is Spanish, with unique modalities and tones. It has a rich poetic and narrative oral tradition. (The culture's) main festivals are those of the Virgin of Monserrate, María Auxiliadora, San Jacinto and St. Peter the Fisherman.

*The meaning of "bongo" as a type of watercraft is unknown. Reader input is requested.

Ecuadorian cholo pescador plank canoe
Th cholo canoe on display is small, probably 12 feet long or less. It is plank-built, with a flat bottom that rises at both ends, hard chines, and nearly vertical sides. Given its small size, we conclude the boat is used by a single fisherman in protected waters, possibly amidst the local mangrove swamps that cover much of the coast. The presumed stern is to the right. (Click any image to enlarge.)
Ecuadorian cholo pescador plank canoe
There are no frames or floor timbers. A single sitting thwart (beneath the religious statue) is the only interior structure. A ringbolt (not visible here, but shown below) near the end at the left of the photo presumably designates the bow. The associated fishing net seems to have a drawstring at the bottom. We believe this is a cast net with a purse-type closure.
Ecuadorian cholo pescador plank canoe - stern transom
Both ends have small, shaped transoms well above the waterline at the ends of the upward-rising flat bottom. The garboard plank is rabbeted into the sides of the transom. There appear to be at least four strakes of varying height per side. The planks are quite thick and the boat is probably too heavy to be carried by one man. We could not make out the method of fastening, but suspect the planks are edge-nailed to one another. Several sheet metal patches have been fastened with nails on the exterior to repair damage, and painted over. 
Ecuadorian cholo pescador plank canoe - bow detail
Ring bolt fastened through the bottom at the presumed bow to secure the painter.
Ecuadorian cholo pescador plank canoe - stern plan view
Plan view of the stern shows that the bottom is made of three strakes, the center one being the widest. The rising ends of the bottom are separate pieces from the central bottom plank, and they are hollowed, dugout-style. This is an interesting, rarely-seen stage of boat development, representing a small step between the extended dugout and the purely plank-built craft.
Also apparent is the substantial shaping of the side planks. (The bow is similar.) Given their thickness, we presume the planks are hewn to the desired curves near the ends rather than bent to shape. The builders may find it easier to build the canoe with a transom than with stemposts and sharp ends, but the substantial hollow of the planking curve just inboard of the transom appears to have no functional explanation, and is probably aesthetic, or perhaps a design holdover from earlier dugout construction. It is somewhat reminiscent of the extended platforms at the ends of many dugout canoes from Ecuador and elsewhere.
Ecuadorian cholo pescador boat model
This model is also part of the cholo pescador section of the same exhibit. It depicts a larger, more seaworthy, double-ended type with sharp ends, probably used by the same people in more open waters along the coast. It shows two sets of internal, sawn frames, two heavy thwarts, and seats at both ends. It is unclear whether it represents a large extended dugout or a boat that is entirely plank-built. The boat would accommodate a larger crew than the small canoe shown above and be capable of taking significantly larger catches. 
Ecuadorian cholo pescador fishing implements
Fishermen's tools. Top: net needles. Bottom: harpoon heads

Wednesday, July 5, 2017

Bonito Fishing Boats in Maldives

In Fishing in Many Waters, James Hornell describes the practice of bonito fishing in the Maldives, including a description of the boats used. Although he doesn’t name the boat type, it can be termed a dhoni. (Somewhat like dhow, dhoni is a generic term that doesn’t indicate a single type of boat. According to Wikipedia, it means simply “small boat” in Tamil and related languages, while thoni is the equivalent term in Malayalam. We’ve written previously about the very different yathra dhoni of Sri Lanka.)

Drawing: a bonito dhoni of the Maldives (Source: James Hornell)
A bonito dhoni of the Maldives (click any image to enlarge)
Probably no longer in use, the Maldivian bonito boats that Hornell observed were “built (especially) for the fishery, long, beamy, graceful craft, fine of line and shallow draft as befits vessels that have their home in coral-infested lagoons of little depth.” He further describes them as stoutly built, mostly open boats with short decks fore and aft and six or seven transverse bulkheads. The aft deck, from which the fishing was conducted, was “shaped like the extended wings of a butterfly” and extended over the sides of the hull. Hornell noted the distinctive “snakelike” stemhead, which rose high above the gunwales, curving gently aft and then slightly forward near the very top “not unlike that of an old Viking ship which, indeed, the boat as a whole closely resembles.” (This latter is an exaggeration. While the stemhead does indeed call to mind a Viking ship, the differences between the two types of craft are far more dramatic and substantial than the purely superficial similarity between them. Hornell, infinitely more than I, understood this well.)

The two compartments fore and aft of the mast each had four to six plugged holes in the bottom, which, when the plugs are removed, allowed them to serve as livewells for bait. These livewells were managed in a curious manner, described below.

A single mast was held in a tabernacle and could be dropped into a crutch aft. The mast supported a tall, narrow squaresail of woven matting and a boomless gaff mainsail of cotton. Although the drawing shows no shrouds, it appears that the squaresail’s halyard may have served as a combination backstay/shroud. The drawing seems to show a light spar extending upward and forward from the base of the mast, but Hornell did not explain its use. (Perhaps it served as a kind of whisker pole for the squaresail?)

traditional Maldivian dhoni, model (Photo: Badr Naseem)
This model of a traditional Maldivian dhoni shows the transverse bulkheads and butterly-shaped aft deck of the bonito boat, but not its S-curved stemhead, recurved sternpost, or two-sail rig. (Photo: Badr Naseem. Source.)
Although somewhat similar dhonis, with transverse bulkheads and the aft platform extending over the sides, remain in use in the Maldives, none of the recent photos we’ve found show the old style bonito boat’s distinctive double-curved stemhead, recurved sternpost, or mixed squaresail/gaff rig. Lateen rigs are the norm in existing boats (or at least, those that are not motorized), and the stemheads curve sharply aft, with no hint of reverse curve.

Before bonito could be caught, the same boats were used to catch baitfish. A square net was fastened to long poles and lowered to the bottom of a lagoon. Ground bait (bait for the baitfish) was dropped over the net. When the baitfish came to feed, the net was raised. Presumably this was repeated many times before sufficient bait for a bonito fishing trip could be accumulated. The live bait was kept in a huge basket in the lagoon until it was time to go fishing in earnest.

The baitfish were then transferred into the dhoni’s livewells and the plugs were removed. According to Hornell:
“(T)he holes being unplugged, continuous streams of water spout inwards. This inrush would speedily swamp the boat were it not that two men are set to work to keep pace by bailing, with the inrush. By means of perforations at suitable and varying heights in the intervening bulkhead the inflowing water is conducted to the after compartment where the two bailers are located. In this way the water in the wells is constantly renewed and thereby maintained in a fit condition to keep alive the stock of little fishes for use as bait.”
In addition to two bailers, the crew consisted of several anglers with fishing poles, a helmsman, four “splashers,” and three or four boys to tend the squaresail. The poles were about six feet long with a line of about six feet fixed fast to the end. Barbless hooks of bright steel at the end of the lines were shaped to resemble baitfish.

Photo: a bonito dhoni of the Maldives (Source: James Hornell)
Bonito fishing in process. Note the heavy splashing around the aft deck.
Upon approaching a shoal of bonito, one of the bailers would stop bailing and begin throwing baitfish into the water while the splashers would use long-handled scoops to vigorously splash water all around the boat. Per Hornell:
“This is a measure of economy; the bonito have to be gulled into the belief that a large shoal of small fish are about and without the splashing the amount of live bait thrown out would be insufficient to carry through the deception successfully.”
But successful the ruse was. The anglers, crowded upon the stern platform, would drop their unbaited, lure-like hooks in the water and yank bonito from it directly into the hold. The barbless hooks could be disengaged merely by slacking the tension on the line for the briefest moment before they were returned to the water with scarcely a pause.

In an active shoal, a man might average one catch per minute, and a boat might catch a full load of 600 to 1,000 fish in two or three hours. The boat owner received 21 percent of the catch as his share, the rest being apportioned amongst the crew. That which was not eaten fresh was cured for later use or for trade by a combination of boiling, smoking, and sun-drying.

Sources:
Except where otherwise noted, information and images are from:
James Hornell, Fishing in Many Waters, Cambridge Univ. Press, 1950