Sundeck

What is a yacht sundeck?

On a motor yacht, the sundeck is the top-side, open-air guest deck positioned above the wheelhouse or bridge deck. It is the lifestyle stage that anchors almost every charter brochure and broker listing, combining sunpads forward, a Jacuzzi or spa pool amidships, a wet bar with fridge and icemaker, and a shaded dining table for eight to fourteen, usually under a composite hardtop with integrated lighting and speakers. Newer 50m-plus builds increasingly add a telescopic glass sunroof or a retractable awning, and an auxiliary helm station is common.

Terminology splits along yacht-type lines, and the distinction matters for cross-shopping HNWI buyers. Displacement motor-yacht builders (Feadship, Lürssen, Heesen, Benetti) use "sundeck" for this space. Planing motor-yacht builders (Sunseeker, Princess, Ferretti, Azimut) call the equivalent deck the "flybridge", almost always with an upper helm. North American builders such as Hatteras, Burger, and Westport often label the same area the "boat deck", particularly when its primary working purpose is tender stowage. The spelling "sun deck" as two words appears in US sources; this page uses the closed compound, which dominates UK and European usage.

Why it matters for yacht owners

For an owner, the sundeck is the primary social area at anchor. It is where guests gather at golden hour, where dinner is served in the Balearics, and where the Jacuzzi photograph that sells the next charter week is taken. It is the space charter clients judge the boat by within five minutes of boarding.

Commercially, the sundeck drives both charter rates and resale value. On 50m-plus motor yachts, the market now expects a usable yacht sundeck with Jacuzzi, full bar, alfresco dining for eight to twelve, and proper shade; listings without these typically discount or undercharter. A refit programme adding a hardtop or Jacuzzi commonly runs into six figures and rarely returns nothing, and broker valuations move with sundeck specification. The trade-off is design philosophy: raised-pilothouse and explorer layouts sacrifice sundeck size for interior volume, owner's-deck privacy, and tender stowage, which suits long-range cruising more than Mediterranean anchorage life.

Key facts

• Position: top-side open guest deck above the bridge deck; not always the literal highest point on raised-pilothouse layouts.
• Standard amenities on 40m-plus motor yachts: sunpads, Jacuzzi, wet bar, alfresco dining for eight to fourteen, lounge seating, auxiliary helm.
• Indicative surface area: roughly 80-120 m² on 40m yachts, 120-200 m² on 50-60m, 200-300 m² on 70m-plus, with flagship 100m-plus yachts often exceeding 350 m². No published industry table fixes these ranges; figures vary materially by GA, hardtop coverage and tender-stowage layout.
• Decking: Burma teak traditionally; new builds increasingly use synthetic alternatives such as Esthec, Bolidt and Flexiteek for weight and sustainability.
• Shading configurations: composite hardtop, retractable awning, Bimini top, or telescopic glass sunroof in the hardtop.
• Builder terminology: displacement yards use "sundeck"; planing-yacht builders use "flybridge"; US builders often call it the "boat deck".
• Helideck convertibility: touch-and-go landing certification is common on 50-80m motor yachts; full certified helidecks sit elsewhere on 80m-plus yachts.
• Top-weight constraints: Jacuzzi free-surface effect and crowd loading are governed by the Red Ensign Group Yacht Code (formerly MCA LY3).