Models · Lagoon
Lagoon 40
DemoCatamaran (Sailing) · 39–40 ft · 2×29–45 hp diesel · intermediate skipper · typically not trailered
Entry Lagoon living space.
Like the lines on this one? Shortlist it with Find your boat. Costs and value are there when you want numbers. Find them online opens real yards & surveyors on their sites (≠ founding partners). We won't invent a dealer lot for this model.
Where the joy lives
Entry Lagoon living space. Stability and living space feel like cheating; beam, haul fees, and two engines are the bill.
- cruising
- charter
- overnight
Watch-outs
Honest watch-outs — so more days feel like why.
- bottom-paint
- insurance-hard
- slip-required
- tow-vehicle-3/4-ton
- winterize-complex
Common watch-outs
- Bridge-deck slamming stress and core moisture
- Twin-engine asymmetry and neglected 'other' side
- Trampoline / netting UV failure (sail cats)
- Wider beam complicates haul-out and slip fit
- Thru-hull doubling increases seacock risk surface
- Daggerboard / keel mechanisms (performance cats)
Safety notes
- Brief guests on trampoline safety and boom/sheet dangers (sail cats).
- Know both engine start/stop and bridge clearances for your beam.
Crew (approx)
Day 8 · overnight 6
Draft (approx ft)
2.5–4.5
Used band (demo)
$210,000–$840,000
Costs — yearly care snapshot
Demo estimateEducational snapshot so surprise spend doesn't steal boat days — not a quote, not the reason you're here.
Educational demo estimate from catamaran · ~40 ft · inboard. Assumes 50 engine-hours/yr, wet-slip, sunbelt, 5-year hold. Boat day proxy = engine-hours ÷ 4. Not a quote, appraisal, or underwriting offer. Two of everything: engines, sails (if sail), haul fees for beam. Slip scarcity can be the real cost driver. Entry Lagoon living space.
Annual mid
$60,169
5-yr total mid
$447,845
$/good day hint
$7,166
Assumes 50 h/yr · wet-slip · sunbelt · 5-year hold. Range $43,941 – $80,454/yr.
Maintenance rhythm (clear the deck)
Engine oil/filters (both sides)
~100h / ~12 mo · Twin systems double calendar work.
Sail-drive / shaft seals (sail cats) or outboard gear lube (power)
~100h / ~12 mo · Check for milky oil.
Bridge-deck and crossbeam structure inspection
~12 mo · Look for stress cracks and soft cores.
Standing/running rigging (sail)
~12 mo · Skip if power-only cat.
Thru-hulls / seacocks both hulls
~12 mo · Twice the underwater fittings.
Bottom paint / haul
~12 mo · Wider beam = haul logistics.
Boat Day survey intel
Educational overlayAdditive survey priors from the Boat Day failure corpus — not a marine survey. Prefer a credentialed surveyor before purchase.
- structure
- rigging
Extra common issues
- Bridge-deck stress
- Rudders play
- Rigging age on sail cats
Survey focus
- Structural survey preferred
- Rudders/daggerboards
- Engine alignment
Campaign / bulletin diligence
- Educational: Multihull bridge-deck and rigging focus; engine access practicality.
- Educational: multihull surveys should include bridge-deck and crossbeam attention.
Top findings for catamaran
- Bridge-deck slamming damage / delaminationmedium · high
- Rudders / daggerboards play and bearing wearmedium · high
- Standing rigging age (sail cats)medium · critical
- Through-hull density under bridgedeckmedium · high
- Engine alignment / shaft seal issues (power cats)medium · high
Corpus: /api/v1/datasets/survey-failures · Pre-purchase checklist · Find them online · surveyors
Cost & survey cues
Two of everything: engines, sails (if sail), haul fees for beam. Slip scarcity can be the real cost driver. Entry Lagoon living space.
Survey focus
- Bridge-deck and crossbeam structure
- Both propulsion systems
- Thru-hulls both hulls
- Rig and trampolines (sail)
- Moisture in cabin soles and bulkheads
- Beam vs marina/haul constraints
If budget is tight
Waterways: sw-florida
Clear next steps
Still dreaming? Shortlist it. Ready for numbers? Run the costs. Need a pro? Find them online: their sites · ≠ founding partners. We don't invent dealers for this model.
Find your boat
Continue from this model
Fun first. Money tools and real pros when you need them.
Specs, years, and HP ranges are approximate educational demo data — not OEM specifications. Verify with manufacturer literature, a qualified marine surveyor, and current listings before purchase or service decisions.