Browns Mountain is one of Sydney's best-known deep-water offshore fishing grounds, and two trips in July 2019 showed exactly why anglers keep making the long run. On the first trip, gemfish were biting almost immediately in about 420 metres before a sudden increase in current ended the session. Two days later, the crew returned, caught kingfish on 100 g jigs at The Peak on the way out, then found the gemfish at Browns again.
This is the rebuilt version of Andrew Hestelow's original Two Trips to Browns Mountain report. The old product sales material and expired tournament promotion have been removed, but the useful fishing evidence remains: what the sounder showed, how the deep-water bite unfolded, how quickly conditions changed, and why 100 g jigs worked well for the kingfish at The Peak.
Quick distinction: the 100 g jigging in this story happened at The Peak in much shallower water, not in 420 m at Browns Mountain. If you're choosing a jig for kingfish, use our jig-weight guide rather than treating depth alone as a fixed weight chart.
Browns Mountain is a deep-water seamount offshore from Sydney. NSW fisheries material has described it as a seamount directly east of Sydney, and it has long been associated with deep-water species including gemfish. On these July 2019 trips Andrew was fishing in approximately 420 metres of water.
That depth is what makes Browns a completely different proposition from Sydney's inshore reefs. Every drop puts hundreds of metres of line into the water, so current, drift, braid diameter, sinker weight and retrieve time matter enormously. Conditions that look manageable inshore can become a serious problem that far offshore.
If you're searching for Browns Mountain fishing coordinates, use current marine charts and a properly configured chartplotter rather than copying a waypoint from an old blog post. Browns is a large offshore feature, different anglers fish different parts of it, and safe navigation should never depend on a historical web coordinate.
Saturday 20 July 2019 started before sunrise at Brooklyn. Andrew had been invited aboard James Taylor's Blackwatch 30 for a run wide of Sydney. With the gear loaded, they headed out with a north-westerly tailwind.
The first stop was Twelve Mile Reef. Around eight boats were already fishing, but the scene did not inspire confidence. Andrew's first impression was that the reef looked quiet, and James' Garmin sounder backed that up: the bottom appeared almost bare.
Rather than spend the morning dropping into empty-looking water, they continued to Browns. The sounder picture there was far more encouraging.
For the Browns session Andrew used the Daiwa Tanacom 750 outfit he owned at the time, with 50 lb braid and a baited deep-water rig. The original article was partly written to sell that combo; we no longer need the sales pitch. The useful part is why Andrew liked the lighter setup: a relatively sensitive rod tip made subtle bites easier to see, while the thinner braid presented less area for deep-water current to push against.
The rig went down to roughly 420 metres. As soon as the sinker reached bottom, Andrew lifted it about five metres to clear the extremely rough structure. Almost immediately the rod tip gave the familiar tap-tap-tap of a bite. The crew had hooked up within about 30 seconds of reaching the sea floor.
The gemfish were smaller than Andrew remembered from previous seasons, but they were there in numbers. The crew was hooking fish on every drop.
Current NSW gemfish rules: limits have changed over time. As of August 2026, NSW lists a combined bag limit of five deep-sea fish, including a maximum of two gemfish per person, with a boat trip limit of ten gemfish. Always check the current NSW saltwater bag and size limits before fishing.
About an hour into the session, one of the crew noticed a line of breaking water approaching from a few hundred metres away. At a place where more than 400 metres of line may be below the boat, that was bad news.
The drift jumped from approximately 0.5 knots to 2.5 knots. That five-fold increase was enough to end the Browns session. Strong current creates more drag on the line, pushes the rig away from the boat and makes maintaining controlled contact with the bottom increasingly difficult.
The crew pulled the pin rather than trying to force the fishing. They trolled much of the way home and the GPS track showed just how substantial the day had been: more than 100 nautical miles travelled.
That sudden change is probably the most important non-fishing lesson in the whole report. Browns Mountain is serious offshore water. Forecast, fuel range, vessel capability, communications and the willingness to turn around matter more than squeezing in one extra drop.
Two days later, on Monday 22 July, Andrew headed back offshore with experienced fishing mate Greg and younger crew Oscar and Xavier. This time the first target was The Peak.
The Peak is not one single neat reef. Andrew describes it as a collection of bumps and productive patches spread across the sea floor. His approach was to move between known areas while watching the sounder, then drop only when bait or kingfish gave the crew a reason to fish.
That sounder-led approach paid off, and Xavier caught his first kingfish on a jig.
The original article says the crew's 100 g jigs worked well on the 40-80 metre reef fishing. That is useful real-world evidence, but it should not be read as a rule that 100 g is always correct for that depth.
Jig weight depends on more than metres. Current speed, wind, boat drift, braid diameter, jig shape and the depth where fish are actually holding all influence whether a lure can reach and stay in the strike zone. The best practical starting point is to use the lightest jig that will reach the fish reliably and remain under useful control. If the line angle keeps opening and the jig sweeps away from the marks before it gets there, step up in weight.
The exact 100 g jig photographed and sold in 2019 was an older Downrigger Shop design. The current 100 g knife jig body was introduced later, in 2022, so we are not pretending it is the identical lure. What carries across is the useful 100 g weight class for Sydney reef and wreck jigging when conditions suit it.
Fishing similar Sydney reefs? See our current 100 g Knife Jigs for Offshore Jigging . Each ten-pack contains five colours with an assist hook fitted. For other weights, browse the Knife Jigs collection .
The kings were not thick enough for Andrew to spend the whole morning at The Peak, particularly with stronger wind forecast later in the day. The crew continued to Browns.
The current was already running hard, but the gemfish were there again. The Browns sounder picture was good enough that when Andrew later posted it to Facebook, anglers asked what transducer and settings he was using.
The old article linked to a dated third-party HDS setup video. Rather than treating one old electronics setup as timeless advice, the better lesson is simple: learn how your own sounder displays bottom structure and fish, use a colour palette and sensitivity that make targets easy for you to interpret, and compare what you see on-screen with what happens after the rig reaches depth.
Oscar soon had his first gemfish.
But the sea was already building in the background. After only a couple of drops, the crew headed home. For the second time in three days, Browns had produced fish quickly but conditions determined how long they could safely stay.
| What happened | Practical lesson |
|---|---|
| Twelve Mile looked quiet on the sounder | Do not spend the morning dropping simply because you have reached a familiar reef |
| Gemfish bit within seconds of the rig reaching the bottom at Browns | Once you find the fish, efficient bottom contact and rapid rig recovery matter in very deep water |
| The drift jumped from roughly 0.5 to 2.5 knots | Deep-water current can change quickly enough to end the session even while fish are biting |
| 100 g jigs caught kingfish at The Peak | Use the lightest jig that reaches and stays in the strike zone; do not choose weight from depth alone |
| Both Browns sessions were shortened by conditions | The decision to leave is part of successful offshore fishing, not a failed trip |
Browns Mountain is a deep-water seamount offshore, directly east of Sydney. It is a serious blue-water run rather than an inshore reef. NSW fisheries material has referred to Browns Mountain in connection with game-fish tagging and deep-water species, including gemfish.
Depth varies around the structure and with the exact area being fished. In these two 2019 Downrigger Shop trips, Andrew describes fishing at approximately 420 metres. That is why current, line drag, sinker weight and the time required to retrieve a rig are such important parts of the story.
We do not publish a single historical waypoint as a navigation instruction. Browns Mountain is a substantial offshore feature and anglers may target different parts of it. Use current official marine charts and your chartplotter to identify the structure, plan the route and confirm any waypoint you intend to use.
Gemfish are the focus of these two winter 2019 reports. Browns is also known as a deep-water fishing area for other species, while pelagic fish can be encountered offshore depending on season and conditions. The nearby stops in this story - Twelve Mile Reef and The Peak - were separate, shallower fishing grounds.
The 100 g jigs in this article were used for kingfish at The Peak, not for the 420 m gemfish fishing at Browns. A 100 g jig can be excellent on suitable Sydney reefs and wrecks, but it should not be treated as the Browns Mountain setup simply because both locations appear in the same trip report.
As of August 2026, NSW lists gemfish within a combined bag limit of five deep-sea fish, with a maximum of two gemfish per person and a boat trip limit of ten gemfish. Regulations can change, so confirm the current NSW fishing rules before heading out.
If you're targeting kingfish rather than fishing deep at Browns, start with How to Jig for Kingfish in Australia . For the question anglers ask most often, see What Weight Jig Should I Use? . You can also read the related 2019 case study, Gemfish & Kingfish off Sydney: Browns Mountain and The Peak .
Looking for the jig used for the shallower part of this story? See the current 100 g Knife Jigs or browse the full Knife Jigs range .