Is a bay boat cheaper than a center console in this model?

Defaults are cheaper because price, horsepower, hours, and storage start lower. Change those inputs to the boat you are shopping. The formulas do not apply a bay-boat discount.

Should I use wet-slip storage for a bay boat?

Only if you will pay for a slip. The default is trailer. Switch storage and watch the fixed pile move.

What costs are included in the all-in monthly number?

Loan principal and interest (unless the boat is paid for), insurance, slip or trailer storage, winterization in cold states, registration, estimated fuel, and maintenance. Most of this bill shows up whether you launch or not.

What if the boat is paid for?

Choose Paid for — no loan. Principal and interest drop to zero. Insurance, storage, fuel, and maintenance still count. Buy vs rent treats the purchase price as cash paid up front.

Is the loan rate a real quote?

No. The default APR is an illustration rate, not a lender quote. Enter the rate on an offer you actually have.

How is fuel burn estimated?

Gasoline uses 0.50 lb/hp-hr specific fuel consumption and 6.2 lb/gal fuel weight. Diesel uses 0.40 and 6.9. Cruise gallons per hour is wide-open-throttle burn times a load factor (default 65%). This is an SFC estimate, not a sea trial.

What does year-5 underwater mean?

If the remaining loan balance after five years is higher than the depreciated boat value (15% the first year, then 10% per year), the loan is underwater in this model.

Estimate bay boat ownership cost in Wisconsin

Bay boats sit between a skiff and a center console: skinny water, a modest V, still usually trailerable. The cost surprise is rarely the hull—it is the outboard and how you park it.

Wisconsin has Lake Michigan, Lake Superior, and a dense inland-lake map. The season is short and this model marks the state cold. AIS rules are part of moving a boat between waters. Great Lakes boats and northwoods lake boats do not share a storage bill.

Calculator defaults on this page are planning inputs, not a survey of Wisconsin asking prices or marina invoices. Replace them with your listing and quotes.

BoatTypePrice$LengthftHorsepower (each)hpEnginesFuel

How you payLoanDown payment$APR%Illustration rate, not a quote.Termyrs

Where you keep itStateStorage

How you use itHours per yearOutings per yearZero outings still shows the bill. Most of it shows up whether you launch or not.Cruise load factorInsurance override (annual)$Blank uses the estimate. Any number, including 0, wins.Slip / storage override (annual)$Maintenance override (annual)$

All-in monthly

$1,151

Estimate based on the planning inputs above, not a quote. Your actual costs will vary.

$628 per outing

Most of this bill shows up whether you launch or not.

Fixed

$9,684/yr

$807/mo

Variable

$4,133/yr

Fuel + maintenance

Year-5 equity

Estimated value $36,250 vs loan balance $31,301.

Principal & interest	$7,670/yr
Insurance	$956/yr
Slip / storage	$500/yr
Winterization	$526/yr
Registration	$32/yr
Fuel	$1,533/yr
Maintenance	$2,600/yr
Annual total	$13,817/yr

Cruise burn 7.9 gph at $3.25/gal. SFC estimate, not a sea trial.

Results travel with the URL.

Compare own vs rent vs club →Trip fuel calculator →

All-in $1,151/mo · $628 per outing

What makes a bay boat expensive to keep

A bay boat is a fishing hull for bays, sounds, and skinny water: more freeboard than a flats skiff, less of an offshore console. This calculator’s defaults keep it trailerable (about 22 feet, a single mid-size outboard, trailer storage) because that is how most bay boats are used.

Owners shop them as “not a huge center console.” That is true on slip length and often on price. It is not automatically true on fuel. A 150-horse outboard still follows the same SFC math. If you jack the horsepower to run a long commute across a sound, the fuel line looks like any other 150–200 horse gasoline boat.

Bay boats earn their keep when they launch often. They look expensive per outing when they live under a cover for 48 weeks. Use the outing field. If you are deciding between this and a true center console, duplicate the scenario and change type—do not compare dealer payments alone.

Draft vs horsepower. The hull is for skinny water; the engine may not be. Budget the engine you will actually hang on the transom.
Trailer life. Default storage is a trailer. A wet slip in a coastal state can erase the “smaller than a console” savings.
Hours in a chop. Bay crossings in wind are higher-load hours than a lake idle. Raise load factor if that is your use.
State waters. Sounds, bays, and inland reservoirs are different registration and insurance contexts. See the state block below.

Wisconsin rules that change the bill

Agency. Wisconsin Department of Natural Resources. Official page: https://dnr.wisconsin.gov/topic/Boat.

Registration and titling. Titles some vessels. California DMV notes Wisconsin titles vessels over 16 feet. Confirm current length cutoffs with Wisconsin DNR. Wisconsin boat registration and titling are DNR products. Length changes whether a title is required. Confirm visitor and paddle-craft rules on the official boat topic page.

Sales or use tax (general). Wisconsin has a statewide sales tax plus local taxes. Boat purchases are generally taxable. Confirm with the Department of Revenue.

Boating education. Operator-age and education rules are state-specific and change. Read Wisconsin Department of Natural Resources rather than assuming a neighboring state's card is enough.

Water and climate in this model. Wisconsin has Lake Michigan, Lake Superior, and a dense inland-lake map. The season is short and this model marks the state cold. AIS rules are part of moving a boat between waters. Great Lakes boats and northwoods lake boats do not share a storage bill. This calculator adds a winterization line in cold states. Months-in-the-water and slip-rate defaults are planning assumptions, not a marina rate sheet.

Sources. Wisconsin DNR boating · California DMV out-of-state vessel registration/titling agencies

Calculators and related pages

Other boats in Wisconsin

Same bay boat, other states

Questions

Who registers a boat in Wisconsin?: Wisconsin Department of Natural Resources is the agency to start with. Wisconsin boat registration and titling are DNR products. Length changes whether a title is required. Confirm visitor and paddle-craft rules on the official boat topic page.
Does Wisconsin charge sales or use tax on boats?: Wisconsin has a statewide sales tax plus local taxes. Boat purchases are generally taxable. Confirm with the Department of Revenue.
Is a bay boat cheaper than a center console in this model?: Defaults are cheaper because price, horsepower, hours, and storage start lower. Change those inputs to the boat you are shopping. The formulas do not apply a bay-boat discount.
Should I use wet-slip storage for a bay boat?: Only if you will pay for a slip. The default is trailer. Switch storage and watch the fixed pile move.
What costs are included in the all-in monthly number?: Loan principal and interest (unless the boat is paid for), insurance, slip or trailer storage, winterization in cold states, registration, estimated fuel, and maintenance. Most of this bill shows up whether you launch or not.
What if the boat is paid for?: Choose Paid for — no loan. Principal and interest drop to zero. Insurance, storage, fuel, and maintenance still count. Buy vs rent treats the purchase price as cash paid up front.
Is the loan rate a real quote?: No. The default APR is an illustration rate, not a lender quote. Enter the rate on an offer you actually have.
How is fuel burn estimated?: Gasoline uses 0.50 lb/hp-hr specific fuel consumption and 6.2 lb/gal fuel weight. Diesel uses 0.40 and 6.9. Cruise gallons per hour is wide-open-throttle burn times a load factor (default 65%). This is an SFC estimate, not a sea trial.
What does year-5 underwater mean?: If the remaining loan balance after five years is higher than the depreciated boat value (15% the first year, then 10% per year), the loan is underwater in this model.