Buying a Lagoon 450 is rarely about “does it look nice.” It’s about whether the boat is structurally stable, mechanically sound, and (in 2026) actually insurable.

This guide is a model-specific, surveyor-minded checklist and screening system designed to help you avoid expensive surprises before you spend money on travel, haul-outs, and full surveys. It is written for real cruising buyers, not armchair shoppers.

What this guide helps you do

• Screen a Lagoon 450 remotely using the right photos, videos, and seller answers

• Identify the model’s high-risk structural zones (including known bulkhead movement patterns)

• Verify safety-critical items, including escape hatch recall/upgrade status

• Focus your sea trial on the loads and behaviors that reveal hidden problems

• Translate findings into practical negotiation leverage (with realistic cost expectations)

• Build a cleaner, more “underwriter-friendly” file for insurance and survey follow-up

What’s inside (high level)

• Model overview and variants

• Known weak points and age-related issues (Lagoon 450 specific)

• Red flags (walk-away signs) and green flags (strong candidates)

• Seller question list and remote photo/video checklist

• Sea trial checklist tailored to this model

• Negotiation guidance based on typical findings

• Communication templates (polite, professional buyer messages)

• Appendix: escape hatch safety (cruising catamarans)

If you want to buy a Lagoon 450 with fewer surprises and a clearer path to insurability, this is the guide you read before you book flights or pay a surveyor.

Digital download. Watermarked for personal use.