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Working crane barge lost in 1949 and lying in 8 m south of the Muskegon channel, machinery standing clear of the sand. Short boat run, shallow enough for a long dive, and a reliable second site after Hamilton Reef.
Google MapsToday — right on the edge — wave, wind and visibility.
Sources & confidence
Compiled by the spearo sea-state engine · How it works →
The verdict comes from seven water factors and hard safety gates — not ten tabs. Go or stay.
Our own model
Our own forecast engine — not a third-party widget. It weighs these water factors into one go-or-stay verdict for this coast; the 0–10 dial is that verdict, read out as a number.
Safety gates
It all folds into a single 0–10 score and one verdict: go or stay.
A forecast, not a guarantee — the sea has the last word.
Where to get in, where to hunt
Leave your email — and the moment a window opens at Muskegon, we'll send the go / no-go verdict. Email is all we need.
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Wind, wave and the swell windows — when to go and the best hours.
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Visibility and what drives it — post-storm clearing, river plume, temperature and the thermocline.
spearo.app folds wind, wave, swell period, visibility, tides, water temperature and risk into a single verdict — go to the spot or not. It computes 7 days ahead from open marine models (Open-Meteo, IPMA), with no sign-up and no accounts. Built for solo spearfishing off the rocks, where any mistake costs dearly.
Now live: 1391 spots across 205 stretches of coast — mainland Portugal, Madeira and the Azores.
See all spotsRelief and bottom type, tides, and the depths of each spot.
The models set the window. Whether you go in is read only at the water: count the sets, watch the surge on the entry. If in doubt, you don't get in.
Scouted entries, coloured by today. The colour is the sea state at the spot, not a guarantee: the wash and a slippery entry you judge on site.
Open the seafloor mapWorking crane barge lost in 1949 and lying in 8 m south of the Muskegon channel, machinery standing clear of the sand. Short boat run, shallow enough for a long dive, and a reliable second site after Hamilton Reef.
Google MapsCameras, map and reference — to hand as you come up.
Check the cam BEFORE you leave. Foam, brown/green murk, or waves washing the entry rocks = No-go. At night/in fog the cam is useless — treat it as «unknown», NOT «green».
The Rock Pile - a snake-like ridge of broken concrete rubble just south of the Muskegon channel in about 9 m, and the best fish structure on this coast. Boat or long shore swim; visibility is best after a spell of offshore wind.
Shallow wreck of 1886 lying in about 3 m north of the Muskegon channel, close enough to swim to from the beach on a flat day. Snorkel depth over sand and timber; the site sands over and uncovers from year to year.
Google MapsA 320 ft whaleback stranded at the Muskegon channel entrance in 1934, her twisted plating lying in 5 m against the north break-wall. Shore-accessible from the channel wall; surge and heavy boat traffic are the hazards.
Google MapsA 253 ft pseudo-whaleback barge foundered in 1930 between Muskegon and Whitehall; the hull and its stone cargo lie in 8-11 m with the midsection sanded over. Easy boat dive, exposed to west swell.
Google MapsA 165 ft wooden passenger steamer that foundered in 1901 off Whitehall, boiler and outer hull exposed in 18-23 m. Boat dive north of Muskegon with good relief and resident fish; visibility improves through the autumn.
Google MapsSOLO is the biggest risk: underwater you can black out from lack of oxygen silently and fatally, with no one around. Solo is never truly «safe». Below are the best weather windows; carry a buoy, tell someone your plan and exit time, and any doubt — don't go.
US spearfishing law is state-by-state. License, spearable species, powerhead rules and distances vary; federal sanctuaries (Gray's Reef, the Keys, Flower Garden Banks) ban spearfishing. Always confirm with the state agency and local ordinances.
Muskegon's law now comes in two layers: the water is open, and the port is shut for one month of the year. Under the 2026 regulations this water is inside Michigan's Lake Michigan underwater-spear water — the MI/IN border north to the 45th parallel — so lake trout, northern pike and walleye are open here, on top of the year-round list. What Muskegon adds is structure: Hamilton Reef, the Rock Pile, a serpentine ridge of broken concrete at about 9 m that the preserve council describes as home to interesting game fish. Add the Henry Cort, the Salvor and the crane barge, remember the 1 to 30 November port closure, and dive it on a breath.
Depths are the ones published for each site; the level column is the dive, not a promise about the fish. On this coast the shallow structure is where a freediving hunter actually works — Michigan bans scuba for spearfishing, so anything under the thermocline is a dive to look at, not a place to hunt.
| Spot | Type | Depth | Level | Access | Notes |
|---|---|---|---|---|---|
| Hamilton Reef | Reef | 9 m | Intermediate, the best fish structure on this coast | Boat or a long shore swim, just south of the channel | The Rock Pile: a snake-like ridge of broken concrete rubble that the preserve council describes as home to interesting game fish. Visibility is best after a spell of offshore wind. |
| Henry Cort | Wreck | 5 m | Novice, shore dive | From the north break-wall at the channel entrance | A 320 ft whaleback stranded in 1934, her twisted plating lying against the wall. Surge and heavy boat traffic are the hazards, not depth. |
| Crane Barge - Muskegon | Wreck | 8 m | Novice to intermediate | Short boat run south of the Muskegon channel | Working crane barge lost in 1949, machinery standing clear of the sand. Shallow enough for a long dive and a reliable second site after Hamilton Reef. |
| Salvor | Wreck | 8-11 m | Intermediate, exposed to west swell | Boat, between Muskegon and Whitehall | A 253 ft pseudo-whaleback barge foundered in 1930; hull and stone cargo visible, midsection sanded over. |
Yes, and with better structure than most of this coast. The 2026 rules opened the whole Michigan Lake Michigan shore up to the 45th parallel, so the game fish are on the table here; Grand Traverse Bay and the November closures at the ports of Grand Haven, Muskegon and Whitehall/Montague are cut out of that water. Muskegon adds a seasonal restriction that catches autumn visitors out. In the ports of Grand Haven, Muskegon and Whitehall/Montague it is unlawful from 1 to 30 November to fish by any means other than hook-and-line, or to possess bow and spearing gear at all. In November the gun stays home.
This is open Lake Michigan coast: sand, a dredged channel and very little hard bottom, which is exactly why the Rock Pile matters. Harbours and channels freeze January to March while the open lake usually does not; the working season is June to October and visibility is best August to October, with the reef reading clearest after a spell of offshore wind that pushes the murky surface water away. There is no tide. The nearest NOAA water-level station is Holland, about 52 km down the coast, so the local read is wind first.
Michigan's Bow & Spear Fishing table — the Fisheries Order under NREPA Part 487 — is an enumerating list: whatever it does not name cannot be taken. Under the 2026 regulations this water is inside Michigan's Lake Michigan underwater-spear water — the MI/IN border north to the 45th parallel — so lake trout, northern pike and walleye are open here, on top of the year-round list. Under that runs the year-round all-waters list — bowfin, bullheads, burbot, common carp, catfish, cisco, freshwater drum, gizzard shad, goldfish, grass carp, longnose gar, rainbow smelt, suckers and lake whitefish. Whitefish, cisco and burbot are real Great Lakes fish, so that is no consolation prize. Lake sturgeon is never a spear target.
Yes, and twice over. First the ordinary Michigan all-species licence: $26 resident annual, $76 nonresident annual, $10 daily, $11 resident senior, required from age 17, licence year 1 March to 31 March. Then the document most visitors miss — anyone spearfishing underwater must be issued a free annual underwater spearfishing licence, and it is still mandatory, though the monthly effort-and-harvest reports it used to carry were abolished for the 2026 season. That licence is a legal condition of the fishery, not a courtesy.
The Henry Cort shows the local risk profile: it lies in 5 m against the north break-wall, where the hazards are surge and heavy boat traffic rather than depth. The channel runs current and is a working navigation route. Hamilton Reef is reachable by a long shore swim, which is a distance and exposure problem in any onshore wind. Cold is the constant: fresh water that stays cold below the first few metres, with the deeper sites under the thermocline. Tow a diver-down flag — but the rule forbids spearfishing where that flag would block boat navigation or access to a launch, and keeps you 150 feet off swimming areas, docks, boat access sites and power intakes, from 30 minutes after sunset to 30 minutes before sunrise. The gear is freediving gear, thicker than a sea diver expects: scuba and rebreathers are banned, so the whole day is breath-hold in fresh water that warms only at the surface, and a 7 mm suit or a hooded two-piece is the baseline for a June–October season, with gloves and boots for pier rubble and wreck steel. Legal gear is a hand-, rubber- or spring-propelled spear; a rubber or spring spear may be fired only fully submerged and must be tied to a line no longer than twenty feet, with the bands off and the safety on whenever you move between areas or enter and leave the water.
Yes. The 2026 rules opened the whole Michigan Lake Michigan shore up to the 45th parallel, so the game fish are on the table here; Grand Traverse Bay and the November closures at the ports of Grand Haven, Muskegon and Whitehall/Montague are cut out of that water. The year-round list — lake whitefish, cisco and burbot among them — stays open on top of that, and the port of Muskegon is shut to spearing gear 1–30 November.
Yes, a local one: from 1 to 30 November in the port of Muskegon it is unlawful to fish by any means other than hook-and-line or to possess bow and spearing gear. The same rule covers Grand Haven and Whitehall/Montague.
Hamilton Reef — a snake-like ridge of broken concrete just south of the Muskegon channel in about 9 m, described by the preserve council as home to interesting game fish.
Michigan's 2026 underwater-spear waters are named lake by lake: Lake Michigan from the MI/IN border to the 45th parallel, a 2-mile strip in Green Bay to the Ford River mouth, a 5-mile strip from Point Detour to the Brevort River, Lake Huron from the Thunder Bay River pier at Alpena south to Fort Gratiot Light, Lake Erie to the Celeron Island line, and Lake Superior to the St. Marys River — with Grand Traverse Bay, Stannard Rock, Big Reef and the 4.5-mile ring round Isle Royale cut out of them. Under the 2026 regulations this water is inside Michigan's Lake Michigan underwater-spear water — the MI/IN border north to the 45th parallel — so lake trout, northern pike and walleye are open here, on top of the year-round list.
No. Artificial breathing devices such as scuba and rebreathers are prohibited while underwater spearfishing, and the diver must be fully submerged to fire a rubber- or spring-propelled spear. Michigan's underwater fishery is freedive only.