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A 135 ft schooner that settled in 16 m in 1887 and has broken apart, leaving keelson, centreboard and hanging knees exposed. The clearest look at wooden ship construction on this coast; boat dive north of St. Joseph.
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
Wind, wave and the swell windows — when to go and the best hours.
The day is picked above, in the hero. Here are that day's windows, the hour-by-hour map and the trends. Tap a window to break down the conditions.
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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.
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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 mapA 135 ft schooner that settled in 16 m in 1887 and has broken apart, leaving keelson, centreboard and hanging knees exposed. The clearest look at wooden ship construction on this coast; boat dive north of St. Joseph.
Google MapsThe outer north pier and lighthouses at the St. Joseph River mouth, armour stone and rubble dropping into 3-8 m. Shore access from Tiscornia Park; the channel runs current and the pier is exposed to west swell. Inside the underwater-spear zone.
Google MapsThe detached breakwater arm south of the St. Joseph entrance, rubble slope into 3-9 m and the only hard bottom for kilometres in either direction. Boat or a long swim; surge builds quickly in any onshore wind.
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.
Cameras, map and reference — to hand as you come up.
St. Joseph anchors the southern end of the Southwest Michigan Underwater Preserve: dredged river mouths turned into harbours, and wrecks on the approaches. It is deep inside Michigan's Lake Michigan underwater-spear zone, so lake trout, northern pike and walleye are legal here as well as the year-round list. On a sand coast the piers do the work — the North Pier from Tiscornia Park and the detached outer breakwater are the only hard bottom for kilometres in either direction. About two hours from Chicago makes this a realistic day trip for the largest market in the Midwest, provided you carry the free underwater licence 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 |
|---|---|---|---|---|---|
| St. Joseph North Pier | Jetty | 3-8 m | Novice, shore dive | Shore access from Tiscornia Park | The outer north pier and its lighthouses at the St. Joseph River mouth, armour stone and rubble dropping into the sand. Channel current and west swell; inside the underwater-spear zone. |
| St. Joseph Outer Breakwater | Jetty | 3-9 m | Intermediate, surge builds fast | Boat or a long swim south of the entrance | The detached breakwater arm, a rubble slope and the only hard bottom for kilometres in either direction — which is exactly why fish hold on it. |
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.
| Havana | Wreck | 16 m | Intermediate, boat dive | Boat north of St. Joseph | A 135 ft schooner that settled in 1887 and has broken apart, leaving keelson, centreboard and hanging knees exposed — the clearest look at wooden ship construction on this coast. |
Yes, and this is the southernmost Michigan port inside the zone. 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. The rest is the state regime: the free annual underwater licence — its monthly report abolished in 2026 — freedive only, daylight only, 150 feet off swimming areas, docks, boat access sites and power intakes.
Sand, sand and two piers. This is the warmest, clearest late-summer water on Michigan's Lake Michigan shore, which matters more here than anywhere because the law is freedive-only: warmth is the limit on the day, and the south end of the coast gives you the most of it. Harbours and channels freeze January to March; the season is June to October and the water is clearest August to October. The depths that matter are 3 to 9 m along the piers and 16 m on the Havana; there is no tide, and the nearest NOAA water-level station is Holland, about 77 km north, so read wind rather than gauges.
Michigan's Bow & Spear Fishing table — the Fisheries Order under NREPA Part 487 — is an enumerating list: what it does not name, you may not spear. 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. Lake trout, northern pike and walleye are on the table here, pike in possession only from 1 July to 15 March. Under it runs the year-round all-waters list, from bowfin and burbot through carp, catfish, drum, gar, smelt and suckers to lake whitefish and cisco. Bass, yellow perch, salmon and every trout but lake trout are on no spear list; lake sturgeon is never a target. Pike are 24 in and two a day, walleye 15 in and five; lake trout limits are zone-specific.
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.
Exposure is the local problem. The outer breakwater builds surge quickly in any onshore wind, and the North Pier is open to west swell while the channel beside it runs current — a combination that turns an easy shore dive into a hard exit within an hour of the wind shifting. The channel is also a working navigation route, so a flag is mandatory in practice and the rule against blocking a launch approach applies directly. 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, well inside it. 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.
Yes — the North Pier is entered from Tiscornia Park, with armour stone and rubble in 3 to 8 m. Keep 150 feet clear of designated swimming areas, docks and boat access sites.
About two hours, which makes it a realistic day trip for the largest market in the Midwest — and the only such trip that reaches legal Great Lakes game-fish spearfishing.
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.