Der Moment, vor dem jeder Bootskäufer Respekt hat - die Outremer 45 von unten!

Standing beneath the towering, knife-like bows of a hauled-out multihull is an experience that invariably quickens the pulse of even the most experienced mariner. On the sun-bleached concrete apron of La Grande-Motte along the Gulf of Lion, Dominik Behringer of BootsProfis met prospective buyer Uwe for the decisive moment in any serious vessel acquisition: the pre-purchase survey on the hard. Suspended in the travelift slings stood a 2002 Outremer 45, an ocean-proven performance cruising catamaran listed at €349,000, waiting to yield its structural secrets to the surveyor’s sounding hammer and moisture meter.

The journey leading to this French Mediterranean haul-out basin had been months in the making. Uwe, a former Lotus sports car driver seeking lightweight performance over cavernous charter volume, signed the purchase contract in February 2023. Shipyard backlogs delayed the out-of-water survey by four months into June 2023. With an agreed refit budget of approximately €50,000 funded by the seller to rectify pre-existing survey defects before final delivery, Dominik began a forensic appraisal to separate minor cosmetic wear from true structural vulnerabilities.

Haul-Out Diagnostics: The High Stakes of Pre-Purchase Multihull Surveys

When Dominik of BootsProfis arrived on the hard in La Grande-Motte to lead this Catamaran Survey of the Outremer 45, the atmosphere carried the sharp tension familiar to any prospective yacht owner facing the Underwater Hull for the first time. Inspecting high-performance Marine Architecture requires moving beyond cosmetic enthusiasm, grounding the acquisition in meticulous acoustic sounding and Osmosis Inspection before contracts become irrevocable.

Visual inspection began with the antifouling coating. The Outremer’s underwater surfaces had previously been treated with Coppercoat epoxy, but Dominik observed widespread flaking and active sheet peeling colonized by calcareous tube worms. The failure stemmed from poor surface preparation: a previous applicator had rolled a primer over old soft antifouling rather than stripping the hull down to the gelcoat. Under hydrodynamic shearing loads, the unbonded coating detached, necessitating complete abrasive stripping back to the structural laminate.

Gérard Danson Naval Architecture and Lightweight Composite Engineering

To evaluate the structural integrity that Dominik and BootsProfis examined during this Catamaran Survey, one must understand the distinct Marine Architecture defining the Outremer 45. Long before modern multihulls expanded into floating seaside apartments, designer Gérard Danson conceived an Underwater Hull engineered strictly around lightweight composite scantlings, slender waterlines, and an Osmosis Inspection profile built to outlast decades of ocean voyaging.

Danson founded Outremer in 1984 with an uncompromising design ethos: high power-to-weight ratios, razor-sharp hull entries, minimal wetted surface area, and exceptional bridgedeck clearance. Displacing merely 6.5 to 7.5 metric tons, the classic Danson 45 weighs roughly half as much as contemporary charter multihulls of equivalent length, such as the Excess 11 or Lagoon 46. Utilizing structural PVC foam cores (Divinycell) and solid composite bulkheads, the design trades superfluous living volume for the ability to outsail heavy weather at speeds exceeding 12 to 14 knots.

Underwater Hull Forensics: Keels, Daggerboards, and Sacrificial Skegs

Descending beneath the bridgedeck, Dominik of BootsProfis began the tactile phase of the Catamaran Survey on the Outremer 45, focusing directly on the Underwater Hull where critical appendages intersect the composite laminate. Because high-performance Marine Architecture relies on retractable foils rather than fixed ballast keels, combining physical percussion sounding with an exacting Osmosis Inspection is the only definitive way to expose hidden fractures, delamination, or core degradation.

Unlike fixed-keel production catamarans, the Outremer 45 utilizes deep daggerboards housed in composite trunks to provide upwind lift and prevent leeway. Inspecting the starboard daggerboard, Dominik identified a vertical fracture running along the bonded centerline seam of its two molded composite halves, caused by intense hydrodynamic side loads. The remedy required removing the foil, grinding back the split seam, and laminating structural biaxial glass tapes in epoxy.

Immediately aft of each daggerboard trunk, small sacrificial GRP skegs protect the Volvo Penta saildrive legs against floating debris. Laminated with only one or two layers of fiberglass, these skegs are engineered to shear off cleanly during high-speed impacts without breaching the hull. Dominik noted that the starboard skeg had delaminated at its bonding flange. The repair protocol called for grinding, re-laminating the breakaway joint, and fairing the leading edge with a flexible polymer fillet to prevent mooring line snags.

Crossbeam Electrolysis, Rudder Assemblies, and Running Rigging Findings

Moving forward along the hulls, Dominik and BootsProfis shifted the Catamaran Survey toward structural cross-members and steering gear, proving why examining an Outremer 45 demands expertise across composite and metallic systems. Even when the Underwater Hull passes every Osmosis Inspection with flying colors, the specialized Marine Architecture of an offshore performance catamaran places extreme dynamic loads on structural beams, steering linkages, and sacrificial attachments.

The forward aluminum crossbeam exhibited severe galvanic pitting and localized wall perforations. Early Outremer crossbeams were manufactured as enclosed hollow extrusions welded shut at the ends. Seawater entering around the forestay chainplate remained trapped inside, causing destructive internal electrolysis. The shipyard correctly condemned the beam for replacement with an upgraded open-profile spar featuring engineered drainage weep holes.

In the steering gear, the yard proactively replaced the entire rudder blade and stainless steel stock due to superficial electrolytic pitting. Dominik also condemned a fractured wave deflector shield forward of the emergency escape hatch, where inspection revealed dry, resin-starved fiberglass fabric from original manufacture. The repair protocol required grinding out the dry laminate and re-bonding the shield in solid epoxy.

Post-Lightning Electronic Overhaul and Interior Ergonomics

Stepping aboard the bridgedeck after completing the exterior appraisal, Dominik of BootsProfis transitioned the Catamaran Survey from the Outremer 45 Underwater Hull to the interior accommodations and systems layout. Unlike high-volume production cats where cosmetic liners conceal core composites, the minimalist Marine Architecture here leaves structural bulkheads and wiring channels fully accessible, offering clear verification after an Osmosis Inspection that interior moisture and structural bonding remain completely sound.

The vessel possessed a major logistical asset: following a prior lightning strike, the entire electrical system had been comprehensively replaced. Dominik praised the immaculate wiring runs, modern circuit panels, and AGM battery bank housed beneath the saloon settee cushions. Ergonomically, standing headroom accommodates tall sailors like Uwe (1.87 m) beneath the central saloon skylight and in the owner’s dedicated shower stall, while keeping exterior cabin windage low.

The Gunboat Connection: Modern Carbon Technology and Grand Large Yachting

A short walk across the boatyard basin provided Dominik of BootsProfis with an extraordinary perspective during this Catamaran Survey, linking the classic Outremer 45 to the cutting-edge multihulls being infused right next door. While the Underwater Hull of Uwe’s boat represents the dawn of fast cruising Marine Architecture, observing advanced composite techniques at Gunboat reinforced how continuous Osmosis Inspection and resin-to-fiber optimization have driven ocean racing multihulls over the past quarter-century.

Both Outremer and Gunboat operate under Grand Large Yachting in La Grande-Motte. Guided through the Gunboat facility by yard representative Pierre, Dominik observed aerospace-grade carbon prepreg construction and resin-infusion processes. Pierre demonstrated how precision infusion eliminates excess liquid resin, shedding over 400 kg of parasitic weight per deck molding while elevating laminate rigidity. This technical lineage explains why classic composite Outremers retain high market valuations decades after construction.

Outremer 45 Pre-Purchase Survey Checklist & Diagnostic Benchmarks

To synthesize the field diagnostics gathered by Dominik and BootsProfis throughout this Catamaran Survey, evaluating the 2002 Outremer 45 requires an objective matrix of structural findings, refit obligations, and Marine Architecture tolerances. Every critical zone across the Underwater Hull—from forward crossbeam electrolysis to foil repairs and Osmosis Inspection readings—must be clearly budgeted against the agreed sales contract before final closing.

Frequently Asked Questions

Addressing the common questions raised when Dominik of BootsProfis conducts a comprehensive Catamaran Survey on an Outremer 45, prospective multihull buyers frequently inquire about evaluating the Underwater Hull, understanding classic Marine Architecture, and navigating the complexities of an Osmosis Inspection on the hard.