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Library · Timber Guide

The timber that makes
a wooden yacht last.

Every timber species used in wooden boat construction — its properties, where it goes in the hull, and why it matters. From keel to cap rail, this guide covers what our surveyors verify on every visit.

Timber Species
Nine timbers every wooden boat owner should know

The choice of timber affects durability, weight, maintenance requirements, resale value, and build cost. The following species are those most commonly specified in Turkish yards and international wooden boat construction.

Iroko
Milicia excelsa

The workhorse of Turkish boatbuilding. Iroko is often called "African teak" — its density, oil content, and rot resistance are comparable to genuine teak at a fraction of the cost. The vast majority of gulets and wooden motor yachts built in Bodrum today use iroko for hull planking and structural framing.

Where it is used
Hull plankingStructural framesKeel membersDeck beamsGunwales
West AfricaOrigin
1,260 lbfJanka hardness
Class 1 (very durable)Durability
SmallMoisture movement
Durability
Workability
Cost
Availability
Teak
Tectona grandis

The gold standard of boatbuilding timber. Teak's natural oils make it supremely resistant to moisture, rot, and marine organisms. Self-lubricating and dimensionally stable. Specified for decks, cockpits, and premium interiors where appearance and longevity are paramount. The most expensive structural timber in common use.

Where it is used
Deck plankingCockpit soleInterior joineryToe railsHandrailsCap rail
Myanmar / plantationOrigin
1,000 lbfJanka hardness
Class 1 (very durable)Durability
Very highOil content
Durability
Workability
Cost
Availability
Mahogany
Swietenia spp. / Khaya spp.

The classic boatbuilding hardwood. True Honduras mahogany (now rare) and its African relatives (Khaya, sapele, utile) offer an exceptional combination of straight grain, dimensional stability, and beauty. Mahogany works and finishes superbly — the interior joinery and topsides of choice for prestige builds.

Where it is used
Hull plankingInterior joineryTopsidesCabin sidesHatchesFurniture
Honduras / West AfricaOrigin
800–1,200 lbfJanka hardness
Class 2 (durable)Durability
Straight to interlockedGrain
Durability
Workability
Cost
Availability
Acacia / Robinia
Robinia pseudoacacia

The local Turkish hardwood. Known as "yalancı akasya" in Turkey, robinia is exceptionally hard and rot-resistant — harder than oak, denser than teak. Turkish yards use it for structural members, frames, and keel timbers where strength is paramount. Sustainable, locally sourced, and often overlooked by international buyers.

Where it is used
FramesKeel timberStructural membersRibsTransoms
Turkey / MediterraneanOrigin
1,700 lbfJanka hardness
Class 1 (very durable)Durability
Excellent in TurkeyAvailability
Durability
Workability
Cost
Availability
Douglas Fir
Pseudotsuga menziesii

The premier mast and spar timber. Douglas fir offers an unmatched strength-to-weight ratio, straight grain, and minimal deflection under load. Large, clear sections are available for solid mast blanks; laminated Douglas fir spars are standard on most serious sailing yachts. Also used for cold-moulded boat shells.

Where it is used
MastsBoomsSparsCold-moulded hullsLaminated beamsStringers
Pacific Northwest, USAOrigin
620 lbfJanka hardness
ExceptionalStrength
Medium-lightWeight
Durability
Workability
Cost
Availability
White Oak
Quercus alba

The traditional European and American boatbuilding oak. White oak (not red oak) is impermeable to water due to its closed pores — this is critical in marine use. Used for frames, floors, deadwood, and transoms in classic construction. Steam-bends beautifully for curved ribs.

Where it is used
Bent frames / ribsFloorsDeadwoodTransomKeelsonStructural knee
Europe / North AmericaOrigin
1,360 lbfJanka hardness
Class 2 (durable)Durability
Excellent (steam)Bending
Durability
Workability
Cost
Availability
Western Red Cedar
Thuja plicata

Light, rot-resistant, and ideal for strip-planked hull construction. Cedar's low density makes it the preferred core material in strip-plank and cold-moulded composite hulls. Aromatic and beautiful, it is also used for interior linings. Not a structural timber, but a critical element in modern wood-epoxy boatbuilding.

Where it is used
Strip planking (core)Cold-moulded veneersInterior liningLightweight deckingDeck core
Pacific Northwest, USAOrigin
350 lbfJanka hardness
Class 2 (durable)Durability
Very lightWeight
Durability
Workability
Cost
Availability
Sapele
Entandrophragma cylindricum

An African mahogany relative with a distinctive ribbon-stripe figure when quartersawn. Harder and heavier than Khaya mahogany, sapele is valued for its striking appearance in interior joinery, cabin soles, and furniture. Increasingly used as a teak alternative for decorative deck components.

Where it is used
Interior joineryCabin furnitureFacing veneersCockpit trimCompanionway
West / Central AfricaOrigin
1,410 lbfJanka hardness
Interlocked (ribbon)Figure
ExcellentFinish
Durability
Workability
Cost
Availability
Yew
Taxus baccata

Rare, dense, and extraordinarily beautiful. Yew is used almost exclusively for decorative interior work in premium builds — inlays, decorative panels, small furniture components. Its deep orange-red heartwood with cream sapwood creates striking contrast. A true luxury timber, sourced in small quantities from European estates.

Where it is used
Decorative inlaysInterior panelsFurniture accentsBespoke joinery
EuropeOrigin
1,520 lbfJanka hardness
Class 2Durability
HighRarity
Durability
Workability
Cost
Availability
Where each timber goes in the hull

Every structural component of a wooden vessel has specific timber requirements — based on load, moisture exposure, desired finish, and longevity. This is what our surveyors verify at every inspection stage.

Keel & Deadwood
Acacia / Robinia, White Oak, Iroko — maximum density and durability for the lowest part of the hull, always underwater.
🦴
Frames & Ribs
White Oak (bent frames), Acacia (sawn frames) — must steam-bend or be cut across the grain without splitting.
🪵
Hull Planking
Iroko, Mahogany, Teak — carvel planking requires long, straight, stable timber with good rot resistance.
🔩
Structural Stringers
Douglas Fir, Iroko — longitudinal strength members. High stiffness-to-weight essential.
🪢
Deck Beams
Douglas Fir, Iroko — support the deck from below. Must resist downward loads without deflection.
🌊
Deck Planking
Teak (premium), Iroko, Mahogany — must resist UV, saltwater, foot traffic, and expansion cycles.
🏠
Cabin Structure
Mahogany, Iroko — cabin sides, coamings, and hatches. Beauty plus weather resistance.
🛋
Interior Joinery
Mahogany, Sapele, Teak — furniture, cabinetry, sole (floor). Appearance paramount.
🎿
Masts & Spars
Douglas Fir, Sitka Spruce — exceptional strength-to-weight, straight grain, no knots.
🎨
Decorative Trim
Sapele, Yew, Teak — handrails, toe rails, cap rails, name boards. Visual signature of the vessel.
🔧
Structural Knee & Floors
White Oak, Acacia — angled structural connectors where high loads transfer between members.
⚙️
Cold-Moulded Core
Western Red Cedar, Douglas Fir — veneer layers epoxy-laminated. Light, strong, rot-resistant composite.
Quick Reference
Species comparison table

At a glance — durability, workability, cost, and primary applications for all nine timbers covered in this guide.

TimberDurabilityWorkabilityCostOriginPrimary uses
Iroko ⭐⭐⭐⭐⭐ ⭐⭐⭐⭐ Low West Africa Hull planking, Structural frames, Keel members
Teak ⭐⭐⭐⭐⭐ ⭐⭐⭐ High Myanmar / plantation Deck planking, Cockpit sole, Interior joinery
Mahogany ⭐⭐⭐⭐ ⭐⭐⭐⭐⭐ Medium Honduras / West Africa Hull planking, Interior joinery, Topsides
Acacia / Robinia ⭐⭐⭐⭐⭐ ⭐⭐⭐ Low Turkey / Mediterranean Frames, Keel timber, Structural members
Douglas Fir ⭐⭐⭐ ⭐⭐⭐⭐⭐ Medium Pacific Northwest, USA Masts, Booms, Spars
White Oak ⭐⭐⭐⭐ ⭐⭐⭐ Medium Europe / North America Bent frames / ribs, Floors, Deadwood
Western Red Cedar ⭐⭐⭐ ⭐⭐⭐⭐⭐ Medium Pacific Northwest, USA Strip planking (core), Cold-moulded veneers, Interior lining
Sapele ⭐⭐⭐⭐ ⭐⭐⭐ Medium West / Central Africa Interior joinery, Cabin furniture, Facing veneers
Yew ⭐⭐⭐⭐ ⭐⭐⭐ High Europe Decorative inlays, Interior panels, Furniture accents

⭐⭐⭐⭐⭐ = Excellent   Cost: Low = affordable, High = expensive

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⛵ Vessel Types
All wooden vessel types illustrated
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How a wooden yacht is built
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