Deep water within reach of a short drop
At Honmoku Sea Fishing Facility in Yokohama, a useful horse-mackerel presentation need not travel a long way horizontally. The offshore pier gives access to water approaching 15 m deep, with current that can bring a school through and then move it out of reach. The first task is to find the feeding layer, not to keep lowering an identical rig to an identical depth after the bites stop.
The target is Japanese horse mackerel, Trachurus japonicus, called ma-aji. This is a practical plan for using a managed fishing facility, not a report that fish are currently schooling beneath a particular section. Winter trips especially should be based on recent facility information: broad seasonal guidance favours summer and autumn, and a December visit is not a guaranteed continuation of autumn fishing.
The facility is at Honmoku Futo in Yokohama. Daiwa's access guide identifies the municipal number 26 bus to Umizuri Sanbashi from the Yokohama or Sakuragicho direction. Check the current service and the operator's opening information before travel. Opening hours, capacity restrictions and weather closures can determine whether the intended late-day session is possible.
Recognise ma-aji and understand the food layer
Ma-aji has a greenish back, silvery flanks and a line of hard scutes towards the tail. These sharp plates are useful distinguishing features when a mixed school includes sardines or mackerel. Do not identify every small silver fish as aji, and do not rely on a gold tone alone: colour changes with light and condition.
The species occurs widely around Japan and farther south in East Asian waters. Regional populations do not all behave identically. Kanagawa's fisheries information distinguishes migrating fish from locally resident fish and describes a seasonal diet that includes small fishes and crustaceans. Its autumn examples include small shrimp-like prey such as mysids. That supports trying a small drifting food imitation without asserting the contents of today's Honmoku school.
The practical consequence is to search vertically as well as along the pier. A school following small prey may be above the seabed, while an empty near-surface layer tells you little about deeper water. Structure and current offer reasons for fish to pass the facility; neither guarantees that they will remain below one angler.
Use the response to the rig as evidence. Several bites at one measured depth are more useful than a single fish caught while the rig was being wound in, although that accidental fish is a reason to test the upper layer deliberately.
Build a short rig you can control
The following numbers are practical starting suggestions, to be adjusted to the actual fish size, current and rod rating. A 2.7–3.6 m light-to-medium pier rod with a 2500–3000 spinning reel is a manageable starting outfit. Around 8–10 lb monofilament main line is straightforward for a beginner and gives some cushioning when a small fish shakes.
Choose a short sabiki with two or three hooks rather than a long string that is awkward to bring over a railing. A total working length around 0.8–1.2 m is easier to handle. Small Japanese sabiki hooks around size 4–6 are a starting comparison for modest aji, but hook numbering and patterns vary: examine the actual gape and match it to the fish being encountered.
A main rig body of roughly 6–8 lb and short branches of about 4–6 lb can be considered for this modest setup. Factory rigs should be used within their stated strength, and cutting down a rig must leave sound connection loops. If unsure, ask the facility tackle shop for a short rig rather than making untested knots in fine line at the railing.
Attach the main line to the top swivel, with the hook branches hanging as intended, and a small bait basket at the bottom. A total loaded basket weight around 20–40 g is a trial range, not a fixed requirement for the full depth. Include the weight of the bait when checking the rod's casting or lifting load.
Fish the sabiki vertically
Load the basket lightly with suitable small shrimp groundbait, commonly sold as ami, rather than packing it so tightly that nothing escapes. Check that the basket cannot open unexpectedly and that no hook is caught around it. Unpack the rig from its top end, keeping the other hooks restrained until needed.
Lower the rig under control. Do not release a loose coil that falls across neighbouring lines. In current, start where a vertical drop is permitted and follow the angle of your own line; a line drifting beneath another angler is a reason to retrieve and reset.
For an initial depth check on clear ground, lower until the basket touches bottom, then raise it roughly half a metre. Lift gently once to release a little bait and hold the rig still for several seconds. Continuous hard pumping can move the hooks away from the small cloud you are trying to create.
If there is no response, bring the rig up about a metre and repeat. Work in measured steps towards midwater, keeping track of the turns of the reel or line markers. Reel turns are a relative measure, not an exact metre scale unless you have checked the retrieve length.
When bites begin, keep the rig in that layer. A small sustained tremor or a steady loading of the tip is a reason to wind smoothly. Avoid a sharp strike that can tear a delicate mouth. Bring the fish in promptly rather than deliberately waiting for every hook to fill, especially with other anglers close by.
Alternative one: a single shrimp bait
A single-hook rig can be easier to manage when the school is present but fish reject the dressed hooks, or when a multi-hook rig becomes an avoidable handling problem. Use a small hook with one piece of krill or other permitted shop-bought bait, keeping the point exposed.
For a vertical presentation, attach a 20–30 cm hook snood to a leader above a small bottom sinker. Position the snood roughly 30–50 cm above the weight. Use a leader around 6–8 lb and a lighter snood if appropriate for the fish, with a weight selected to keep the rig under the rod tip. Start around 10–30 g only where that is sufficient; deeper or faster water may require a different outfit or position.
Lower to the depth where the sabiki produced bites, then hold nearly still with occasional small lifts. This method gives a larger individual bait and removes most of the extra hooks. It is not inherently more selective by species, and the bait should be inspected after missed bites.
If fish are visibly feeding shallow and local rules and space permit, a small float can suspend the same single bait at a measured depth. Attach the float, place a little shot above the hooklength and begin within easy control beside the pier. Retrieve before it drifts into another fishing position. A float that cannot stay in your allotted water is the wrong method for that moment.
Alternative two: a small soft lure where allowed
Ajing uses small soft lures to catch aji, but it requires both suitable water and permission for that part of the facility. Do not assume that because bait fishing is allowed, casting a lure is allowed everywhere. The connecting pier has specific casting and lure restrictions, and crowding can bring additional controls.
Where staff confirm that lure fishing is permitted, a dedicated light rod of about 1.8–2.1 m, a 1000–2000 reel and a 3–5 lb leader around 60–100 cm provide a more suitable setup than the heavier basket outfit. Thread a slender 3–5 cm soft lure straight onto a small jig head.
A 1–2 g head is a conventional starting point for shallow, manageable conditions. It is not a reliable way to reach the bottom of Honmoku's deepest water in strong flow. If control requires much heavier weight, use a suitably rated setup, fish a different permitted position or return to the vertical bait method.
Cast only in the permitted direction and style. Count the initial sink, retrieve slowly, then make a small lift and allow a controlled fall. Test a longer countdown on the next cast to compare depth. Keep a gentle connection to the lure so an unexpected stop or a small tap can be met with a short tightening movement.
Start with a translucent or subdued lure and compare a more visible one only after depth and speed are under control. No colour is established here as a universal winter aji solution.
Match the method to the observed conditions
| Observation | Useful choice | Presentation | Main caveat |
|---|---|---|---|
| Fish appear at a repeatable deeper level | Short vertical sabiki | Small release of bait, then a still pause | Keep track of depth instead of continually pumping |
| Bites occur but dressed hooks are ignored | Single shrimp bait above a sinker | Hold at the productive layer | Inspect bait after missed bites |
| Fish feed shallow beside a permitted position | Small float with one bait | Short controlled drift | Retrieve before crossing neighbouring lines |
| Lure fishing is permitted and current is manageable | Small straight-rigged soft lure | Counted sink, slow retrieve and short falls | Light heads may not reach the intended depth |
| Line angles away and tangles repeatedly | Heavier compatible basket or different position | Reset vertically | More hooks or more groundbait will not correct poor control |
A worked session from arrival to the last test
On arrival, check the permitted methods, available positions and current closing arrangements. The operator has issued temporary opening changes and maintenance notices, so use the dated information for the actual visit rather than an old general timetable.
Start with one rod and a short sabiki. Spend the first fifteen minutes establishing a safe drop and testing the lower layer, then one-metre steps above it. Use a small amount of bait consistently. A large groundbait release followed by an empty basket makes it harder to compare successive drops.
If the first fish comes halfway up during retrieval, deliberately stop at that level on the next drop. If several bites follow, note the setting. If bites stop, check for a damaged hook branch, an empty basket or a change in current before deciding that the school has gone.
After a useful series of blank tests, change depth or move to another available, permitted position. If the school is plainly present but hook-ups are poor, compare the single-bait rig. If no evidence of aji appears, accept that the winter session may be unproductive; do not turn another species into a false ma-aji catch report.
Land small fish smoothly and use an appropriate landing net for anything that should not be lifted on the light trace. Keep unused hooks restrained while unhooking. A short rig earns its place here by making the last metre of the catch much more manageable.
Local rules and a brief handling note
Buy the correct Honmoku fishing admission and follow the operator's current method, rod and closure instructions. Kanagawa Prefecture's coastal rules allow specified recreational methods but restrict fish-attracting lights; an ordinary work or safety light is a different use. Do not collect shellfish or other protected fishery-rights species as casual bait. The facility's restrictions apply in addition to regional rules.
Wear appropriate flotation, keep hooks inside your working space and use wet hands or a suitable grip that avoids the sharp tail scutes. Release unwanted fish promptly, and chill any lawful retained catch. A crowded pier rewards a simple, controlled method more than a complicated rig spread across the railing.