yachting world dayboat association

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• Sailboat Guide

Yachting World Dayboat

Yachting World Dayboat is a 14 ′ 0 ″ / 4.3 m monohull sailboat designed by George O'Brien Kennedy and built by Chris Somner Dinghy Services starting in 1949.

Rig and Sails

Auxilary power, accomodations, calculations.

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

SA/D = SA ÷ (D ÷ 64) 2/3

• SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
• D : Displacement in pounds.

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Ballast / Displacement * 100

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

• D: Displacement of the boat in pounds.
• LWL: Waterline length in feet

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

• D: Displacement of the boat in pounds
• LOA: Length overall in feet
• Beam: Width of boat at the widest point in feet

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

CSV = Beam ÷ ³√(D / 64)

Commissioned by Yachting World magazine in 1949. Alternate sliding gunter rig (sloop)(not shown). Active racing fleets located in UK at Poole YC, Gravesend SC and Bosham SC. Thanks to Iain Macpherson for providing information.

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The Yachting World Day Boat

“We decided the Yachting World Day Boat (YWDB) was the one for us – we wanted something stable, comfortable and dry without a spinnaker but which also provided good racing.”  Pete Hewitt YWDB Committee The 14ft Yachting World Day Boat is a classic one-design cruising and racing dinghy which blends stability and seaworthiness with good performance.  The rig is bermudan sloop, with a small foresail that can be handled easily.  A generous beam of 5ft 8'' (1.7m) and a 75lb (34kg) steel centre plate combine to deliver a stable family dinghy suitable for safe day sailing on all types of waters including estuaries and coasts.  However, unlike many popular cruising classes the YWDB, whilst forgiving, provides a responsive, manoeuvrable and able windward performance, making her suitable for both class and handicap racing.  There is a very active Class Association which exists to advise members, promote and maintain a healthy interest in racing and cruising.  Officers and Committee co-ordinate national and local racing, cruising and social events, and keep up to date on matters of interest to Dayboat owners. Good Wood Boat Company builds traditionally constructed wooden hulled YWDBs using clinker construction boat building methods.  GRP boats are available from boat builder - Chris Somner.

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Dream daysailers: 13 of the best boats for a great day out on the water

• Toby Hodges
• July 16, 2020

Toby Hodges looks at the best daysailer yachts on the market, from ultra-modern cruisers to classically-styled masterpieces

Modern daysailers

1. saffier se 33 ud.

Saffier Yachts now has eight designs between 21ft and 37ft. The investment and knowhow the Hennevanger brothers have put into the production facility really shows too – the vacuum-infused builds and finish quality are top class.

Saffier builds seaworthy designs , tests all new models thoroughly in the North Sea and ensures its yachts can be sailed easily single-handedly.

Launched in 2014, the Saffier Se 33 is a sporty design but with a practical self-draining cockpit and optional solid sprayhood, which help it handle most weather conditions. It has a fast underwater shape, a generous sailplan and a fixed carbon bowsprit. The extra-large cockpit features 2m benches and a folding transom and there is space enough for four to sleep below.

Saffier’s brand new Se 27 also looks like a seriously fun design and has been averaging speeds in the mid-teens with the kite up, clocking over 20 knots in its early trials this spring.

Prices for the Se 33 start at €114,500 (ex. VAT).

2. Domani S30

The S30, launched in 2018, is Belgian company Domani’s first model – a trailable sportsboat designed to be comfortable, fast and beautiful, says founder Michael Goddaert.

Inspired by Riva’s Aquarama motor boat , it has a large minimalist cockpit, spacious aft sunbed and a classy-looking compact interior. The narrow-beamed S30 weighs only 1,700kg, is offered with a long, two-part carbon rig, and has an electric drive as standard. A Lounge version is being developed which is similar to the Tofinou 9.7 in terms of deck layout.

Price ex. VAT: €88,000.

Article continues below…

Tofinou 9.7 review: This Peugeot-designed daysailer is a thing of great beauty

There are some too-rare boats that turn every head, and everything about them attracts your attention. The new Tofinou 9.7…

Saffier SE37 Lounge test: A veritable supercar of the seas

Looking for a pair of trainers for fashion, road and cross-country running? They don’t exist. Or a bilge keeler that…

3. Black Pepper Code 0.1

Those lucky enough to have sailed at Les Voiles de St Tropez may have seen these neo-classic daysailers from chic brand Black Pepper.

As well as this range of Code-branded daysailers/weekenders, the yard has just launched a new Sam Manuard-designed, scow-bowed IMOCA 60 for Armel Tripon’s Vendée Globe campaign.

The original Code 0, by Marc Lombard, is a high-performance dayboat with a distinctive squared coachroof, which is built light in carbon and epoxy with half its displacement in the keel bulb.

A new Code 0.1 version (pictured) launched last year, and is available in Open and Spirit (performance/regatta) versions.

Price ex. VAT: £148,000.

4. A-Yachts A27 / A33

A-Yachts founder. Michael Gilhofer helped to develop the original B30 (pictured below) and was distributor for B-Yachts in Germany for 17 years. He commissioned the in-demand Lorenzo Argento, who formerly worked with Luca Brenta, to design a new range of luxury daysailers built in Slovenia and finished in Austria.

The first two A-Yachts models (the A27 is pictured above) are focused on performance daysailing, whereas B-Yachts has gone for more cruising comfort below. An exciting new model, the A39, is due for launch in 2021.

Prices ex. VAT: A27 €98,500, A33 €215,000.

5. B-Yachts B30 / B34

The Brenta B30 is the iconic Italian daysailer. A real looker to keep berthed at your Portofino residence, it has a lightweight carbon/epoxy build and a high ballast ratio, for tantalising light airs sailing. B-Yachts is the brand that took the daysailing concept to the limit with the fiendishly indulgent (and very white) B60, which we tested, open-mouthed, back in 2008.

Although stagnant for some years, the company was acquired by Luca Brenta’s cousin Alberto Castiglioni in late 2018. Brenta, along with designer Alessia Lee, has worked up the design for a new B34 model due to launch this year, and they are now working on a B40.

The B30 (above) is now a modern classic, with more than 40 built, but the refreshed company has made some upgrades including a new rudder profile, fixed bowsprit, revised deck gear, a more functional interior and the option for an electric engine. But it’s still got those killer lines.

Prices ex. VAT: B30 €118,000, B34 €190,000.

6. Esse 330

This is the sixth model from Josef Schuchter’s yard on Lake Zurich, which builds fast, stiff and sporty designs. The new 330 is the first Esse that offers the ability for weekend/overnight sailing. Schuchter told us it is designed more for pleasure sailing than racing but has the same performance as the yard’s 990, using a 1m shorter mast and with greater stability and comfort.

Umberto Felci designed the 330 with a self-tacking jib, a carbon deck-stepped mast with no backstay and a high ballast ratio to help ensure it can easily be sailed short-handed. A lifting keel reduces draught to 1.55m and an electric drive is offered.

Price ex. VAT: €134,000.

A plumb stem and square coachroof give an alluring pilot classic style to this Judel/Vrolijk design, but it is the materials from which it is crafted that are most intriguing. Built by Bremen-based Greenboats, the flax (plant) or linen (fibre) is vacuum-infused with bio epoxy and can be given a clearcoat finish to help show off the fibres.

The focus is on weight-saving for this performance daysailer, using recycled PET as the core material. The deck is made from cork, the ropes are made entirely from recycled plastic bottles and the sails are recyclable.

Price ex. VAT, ready to sail: €126,000.

Modern-classic daysailers

8. eagle 38.

The Boersma brothers founded Leonardo Yachts in the northern part of the Netherlands to build top quality gentleman’s daysailers and weekenders.

Its range of gorgeous designs are inspired by the timeless lines and overhangs of the J Class , but with modern appendages.

The new Hoek-designed Eagle 38 is the smallest of a range that now extends to 70ft. It is devised for easy handling, with jib winches in reach of the helmsman/tiller, in a deep self-draining cockpit that can seat six in comfort.

The varnished mahogany interior can sleep three and includes cooking facilities and a neatly hidden toilet.

Price ex. VAT: €177,500.

9. Wally Nano MkII

Wally stunned us with the unveiling of its incomparable Nano in 2009. The Andre Hoek-designed masterpiece certainly elevated the standard of extravagance (and price) for a daysailer. This Wally Nano MkII model released eight years later is a refined version of the achingly cool design, which marries Italian styling with Dutch workmanship and ingenuity.

A pilot cutter-influenced plumb bow, bowsprit and low, squared coachroof set off a retro style, finished by an elegantly overhanging counter. These classic lines meet contemporary construction and attention to detail at Joop Doomernik’s traditional Dragon building yard. The top class composite work includes a keel grid built from 33 layers of carbon. Believe me, the result on the water is a truly intoxicating ride, both upwind and down!

Price ex. VAT: €390,000.

10. Rustler 33

The Stephen Jones design has the elegant lines and overhangs of the Cornish yard’s earlier Rustler 24, but with a comfortable handmade interior that makes it enticing to overnight on too – there is a proper heads compartment including wet hanging area.

With the addition of stanchions, this becomes a Class B offshore yacht. It’s a stiff boat to sail with a deep, dry cockpit, in which it is comfortable to sit, perch on the chunky coaming or stand to handle the tiller.

Rustler says recent clients for the Rustler 33 are ordering them with carbon masts and electric engines.

Price ex. VAT: £165,000.

11. Morris 29

Fusing S&S lines with modern lightweight materials such as carbon and epoxy, the Morris 29 is a quintessential daysailer that’s easy to rig and maintain, a witch to sail and is as handsome as they come.

And there’s a deep, long cockpit and comfortable saloon below to keep any guests content while you hog the tiller. Now built by Hinckley and priced from US$266,500.

12. Alerion 28 / 33

Cleverly marketed as ‘the 90-minute’ getaway, the iconic Alerion daysailer fleet, from 20-33ft, is designed to get people afloat easily and with the most enjoyment possible. Above is the Alerion 33.

Often seen sporting optional Hoyt jib booms, the models are easy and a delight to sail and have inviting and well-finished interiors.

Rarely do beauty, speed and single-handed ease combine this fluidly and successfully. Prices are available on application only.

13. Friendship 36 / 40

The elegantly timeless look of the Friendship 40, its classic lines, including pronounced tumblehome and wineglass counter, are by Rhode Island’s Ted Fontaine. A Friendship’s deep cockpit and wonderfully inviting and well-appointed interior invite you to sail on through the weekend and beyond.

Fontaine says both the 36 and 40 are still available to order, but at top prices: “The Friendship 40 would be built by Yachting Developments in New Zealand where the moulds are presently stored,” (priced in the region of US $1,350,000).

“And the Friendship 36 is being offered as a cold-moulded wood epoxy built boat that would be built by Rockport Marine in Maine – the yard that built the first 36.”

First published in the June 2020 edition of Yachting World.

 St. Petersburg Sailing Association

The St. Pete Sailing Association races for the thrill of it, for the fun of it, and for all the stories that come of it! The season runs from September through May. There is one series race per month, usually on a Saturday. Additionally, there are several regattas including the Good Old Boat Regatta, one of the premier events in Florida. See the Regattas page for the full list. Most races are followed by a social event and we’d love to have you there – see our Calendar for information.

The aim of the association is to provide a program of fun racing on Tampa Bay for sailboats of different types via handicaps. Eligible sailboats are those which are self-righting, have self-draining cockpits, and a minimum overall length of twenty feet. Boats are rated by the West Florida Performance Handicap Racing Fleet (WFPHRF) or a special SPSA handicap rating. Races are sailed under the current I.Y.R.U. rules and prescriptions of the U.S.S.A. with certain exceptions and amendments that are set forth in the sailing instructions. Race results are posted to the SPSA website.

If you would like more information about racing with SPSA, our upcoming events, or about becoming a member please contact the [email protected] .

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Helly Hansen Sailing World Regatta Series – St. Petersburg

February 14-16, 2025  •  Hosted by the St. Petersburg Yacht Club

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St. Petersburg Social Pass

Enjoy snack and drinks nightly, the launch of Mount Gay Rum’s special edition, SPYC’s Famous Saturday Supper, music, games and more. Complimentary Social Passes for SWRS Race Officials and Junior Sailors. Advance offer – Buy 4 and the 5th pass free.

Speaker Series – St. Petersburg – Victor Diaz de Leon

Venezuelan wonder-boy, Victor Diaz de Leon , was the first Special Guest of the 2024 Sailing World Speaker Series. Sailing World Editor, Dave Reed, covered special stories behind Victor’s climb to multiple victories, and the sizzle of the new SailGP Team United States.

Mount Gay Rum Cocktail Contest

• Winning Cocktail: “Low Tide Old Fashioned”
• Winning SWRS Team: Va Bene – Brad Barrios, Thomas Barry, Andrea Cichon, Michal Cichon, Tara Lee Costich, Ryan Graber, Michael Jacobsen, Mark Macke, Frances McCarthy, Tom O’Donohue, David Slonena
• Ingredients: 2oz Mount Gay Black Barrel, 1/3 oz Banana liquor, 5 drps Angostuna bitters, 4 drops Peychard bitters, dark simple syrup, fresh cinnamon, Maraschino cherries
• How to Make: Mix ingredients in stirring glass, cover cocktail glass with dark simple syrup, layer rum, float banana liquor, grate cinnamon, garnish with cinnamon and cherries

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The Helly Hansen Sailing World Regatta Series 2024 kicks off in St. Petersburg with a packed Tampa Bay.

One For the Books in St. Petersburg

A big turnout, lively parties and great racing. It’s what to expect at the Helly Hansen Sailing World Regatta Series in St. Petersburg.

Helly Hansen Sailing World Regatta Series St. Petersburg 2023 Gallery

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The yachting world

Dayboat association, events calendar, 2025 events, already confirmed with more to follow….

Bosham SC YWDB Open 2025

Bosham Sailing Club, The Quay, Bosham, West Sussex, PO18 8LU

Poole YC YWDB Open 2025

The Poole Yacht Club, The Yacht Haven, New Harbour Road West, Hamworthy, Poole, BH15 4AQ

Dayboat Week 2025

Royal Cornwall Yacht Club, Greenbank, Falmouth, TR11 2SP

2024 Events

Bosham sc ywdb open 2024, try a dayboat.

Avon SC YWDB Open 2024

Avon Sailing Club, Chacely Stock, Chacely, Gloucestershire, GL19 4EQ

Dayboat Week 2024

Brixham Yacht Club, Overgang Road, Brixham, Devon, TQ5 8AR

Gravesend SC YWDB Open 2024

Gravesend Sailing Club, Gordon Promenade East, Gravesend, Kent, DA12 2RN

Poole YC YWDB Open 2024

Thornbury SC YWDB Open 2024

Thornbury Sailing Club, Church Road, Oldbury-on-Severn, South Gloucestershire, BS35 1QA

© 2024 Yachting World Dayboat Association

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