Flotation & Buoyancy Safety

An article celebrating Thistlers who have tested their boats' capabilities under bare poles. Features stories of Jack Snell and Stan Bassett's THIS'LL DO #56 in 1946 and Ronnie Small's LYLII #221 caught in a July 4th squall, both handling bare-pole conditions successfully.

A response to a previous article about swamping in Thistles, defending the quality of boats and discussing past racing techniques and water safety practices.

Douglas provides technical sailing advice on an efficient method for bailing water from a swamped Thistle. The technique involves careful use of the main sheet and allowing the boat to move forward naturally to drain water.

Several sailors and fleets have expressed interest in legalizing hiking straps in Thistle boats. The author notes that the time is ripe for an official motion to be submitted by a fleet to move this proposal forward.

Thistledown, the Delta District's publication, reports on life preserver tests conducted on guard-approved types. Results are shared with interested Thistle sailors for safety considerations.

A Thistledown publication highlights the July issue of COMPRESSED LIFEBOATS containing a good analysis of life preservers. The article notes that results are given of tests made on the coast guard-approved types that Thistles may find of interest.

Editorial discussing the Thistle class by-laws regarding roller reefing requirements. The article explores two distinct skipper groups in the class - those with reefing experience and those without - and addresses the responsibility of class safety and whether skippers should be required to have reefing capability.

Technical continuation of the Measurer's Memo discussing buoyancy tank specifications, flotation calculations, and proper placement of stern buoyancy tanks in Thistle hulls, both wooden and fiberglass versions.

The Kansas City Thistle Fleet tested styrofoam stern flotation blocks designed to meet TCA requirements. The blocks provide 290 lbs of buoyancy with storage for equipment and integrate hiking strap attachment. Testing in 25-35 knot winds demonstrated the flotation's effectiveness for self-rescue capabilities.

The Kansas City Thistle Fleet designed and tested stern flotation blocks made from styrofoam logs to comply with TCA by-laws. Costing less than $20 each, these blocks were proven effective in high winds, with boats equipped with them successfully self-righting in 25-35 knot gusts without needing to lower sails.

Product information about styrofoam stern flotation blocks for Thistle boats, with details about materials and pricing.

Comprehensive article reviewing existing wearable life-saving equipment and regulations for Thistle racing. Detailed overview of TCA By-Laws requirements, Coast Guard Standards, and available commercial equipment options with specifications and pricing. Discusses new safety testing programs and future equipment developments.

Comprehensive article on wearable life-saving equipment regulations and options for Thistle racers, including Coast Guard requirements and detailed equipment comparison table with manufacturers and costs.

A brief announcement regarding new Board of Governors ruling requiring all Thistle racers to wear life saving equipment aboard during racing, effective in August, with details on approved cushion types that satisfy legal requirements.

Safety article explaining new mandatory requirements for wearable life-saving equipment while racing. Discusses why proper flotation gear is essential and reviews various types of approved devices.

Announcement of mandatory wearable life saving equipment requirement for all racing crews and skippers. Discusses the importance of this safety measure and notes that the standard "C. G. Approved" cushion may be necessary but that wearable devices provide superior flotation and freedom of movement.

Product information for stern flotation blocks made from Styrofoam, cut to shape and available through fleet suppliers.

Detailed technical article on the hazards and handling techniques for fiberglass Thistle boats, including observations on swamping, self-rescue methods, safety equipment, and design differences compared to plywood boats.

Article by a veteran Thistle sailor on glass boat design, comparing them favorably to plywood Thistles for rescue and handling procedures. Covers advantages in swamping situations and practical safety considerations for crew.

A technical discussion of hull flotation characteristics in fiberglass versus plywood Thistles, examining buoyancy requirements and flotation methods used in different boat types. The article explores the advantages and disadvantages of fiberglass construction and various flotation systems, including foam tanks and styrofoam alternatives.

Technical discussion of fiberglass hull construction and measurement standards for Thistle boats. Addresses flotation improvements, buoyancy tank requirements, and various construction methods for achieving proper specifications.

Detailed technical article on fiberglass boat flotation and buoyancy systems. Discusses the evolution from wood to fiberglass hulls, buoyancy tank requirements, swamping prevention, and specifications for proper flotation based on hull design standards.

Continuation of technical discussion on Thistle hull construction, flotation, and measurement standards. Addresses practical questions about hull improvements and performance optimization.

Detailed technical guide to installing flotation in wooden Thistle hulls using expanded polystyrene foam. Covers the entire installation process from planning through attachment with epoxy and protective finishing.

Medaker describes his method of adding floatation to his wooden Thistle hull using expandable polyurethane foam (Spanex). He covers the entire process of installing foam sections to increase buoyancy and prevent capsizing.

Article about transom bailers as a solution for handling water in Thistle boats. The author recounts a sailing incident where the boat accumulated water and discusses various bailer designs and recommendations for boat maintenance.

Discussion of wood flotation design for new Thistle hulls, particularly focusing on the legal flotation tank design developed by Howard King of Indianapolis with built-in tanks that are legal provided the top of the sump tank is parallel to the water line.

Discussion of new ruling on wetting agents used to reduce skin friction on Thistle hulls, emphasizing honest competition and proper boat maintenance practices.

Discussion of concerns regarding the construction and reliability of wearable life jackets used in Thistle sailing. The article addresses waterlogging issues discovered in Elvstrom life jackets after a tragic accident at Santa Cruz and suggests improvements needed in life jacket construction standards.

Comprehensive column addressing frequently asked questions about boat flotation, materials, styrofoam placement, weight considerations, leaks, and maintenance. Haupt discusses different foam types, their properties, costs, and installation methods for Thistle sailboats.

Comprehensive Q&A article addressing common concerns about boat flotation materials, installation methods, and performance characteristics. Covers foam types, properties, costs, and practical applications for Thistles.

President Tom Wilson discusses the importance of positive flotation for safety, addresses concerns raised at the Special Meeting about the flotation proposal, and explains why the TCA should implement mandatory positive flotation requirements despite potential controversy.

President's statement on positive flotation as a safety measure. Discusses committee disagreements and the need for action, while noting that some degree of sacrifice may be necessary for safety improvements.

Continuation of technical discussion on flotation materials with Q&A format covering foam types, installation methods for fiberglass boats, and practical solutions for maintaining positive buoyancy.

Extensive section of letters to the editor covering flotation concerns, boat safety, mast design, and technical discussions about Thistle equipment and construction methods from various readers and sailors.

Collection of letters from Thistle sailors discussing safety concerns, flotation proposals, and various technical and operational topics related to the class.

A collection of reader letters discussing flotation and safety issues in Thistle racing. One letter proposes new safety regulations for flotation devices, while another discusses dress codes for regattas and dinners.

Technical discussion of positive buoyancy solutions for Thistle boats, including analysis of wood versus fiberglass construction, foam block specifications, and practical considerations for flotation systems.

Technical memo from the Chief Measurer regarding buoyancy tanks and flotation equipment specifications for Thistle boats, with notes about requirements and installation procedures.

Editorial perspective on flotation issues in new Thistles, proposing increased flotation capacity and discussing design improvements to address safety concerns.

Collection of notices and columns addressing fleet operations, measurement rules, and proposed amendments to flotation specifications. Includes sections on bouyancy tank regulations and official membership meeting details.

Comprehensive technical examination of flotation issues in Thistle boats, including an analysis of a 1969 Santa Cruz incident, recommendations for improved flotation designs, and specifications for foam-based flotation systems.

Comprehensive analysis of flotation problems in Thistle sailboats, examining how an incident at Santa Cruz revealed critical safety issues and proposing various solutions including foam blocks, larger tanks, and synthetic materials for improved buoyancy.

Step-by-step procedural instructions for installing foam flotation and access ports to improve boat safety and buoyancy.

Summary of specific flotation data and calculations for fiberglass Thistles, including volumetric requirements and recommendations from the Safety Flotation Study Committee.

Continuation of flotation discussion including letters from readers and responses about technical issues with boat design, flotation tanks, and sailing safety.

The Chief Measurer addresses questions about flotation in wooden and glass Thistles. Miller explains the flotation requirements and proposes methods for installing positive buoyancy using Styrofoam or sealed polyethylene tubes.

Letters from readers discussing weight measurement tolerances, scale accuracy, rule specifications, and proposed amendments to Thistle Class specifications. Includes commentary on buoyancy, flotation, and boat construction standards.

Practical guide for adding required positive buoyancy to Thistle boats for the 1971 Mid-Winters competition. Provides detailed instructions for installing Styrofoam in wood and fiberglass boats with specific materials and tools needed.

Comprehensive weight reduction guide for overweight Thistles. Details specific areas for improvement including hardware, centerboard, hull, mast, and woodwork with examples from successful projects.

A safety warning about fiberglass resin catalyst (MEKP) used in boat repairs, explaining the dangers to eyes and proper precautions for handling.

Safety note warning about the hazards of fiberglass resin catalysts used in boat maintenance, particularly the risk of eye damage from MEKP catalyst exposure and recommendations for protective equipment.

James discusses his 25 years of sailing a wooden Thistle and the importance of proper flotation management. He describes his experience with flotation modifications and weight calculations to improve the boat's ability to recover from capsizes and maintain performance.

The Chief Measurer discusses the critical need to increase flotation requirements for wooden-hulled Thistles from 400 to 750 pounds to ensure safety and prevent capsizing in severe conditions, proposing this amendment for membership approval.

Detailed minutes from the Thistle Class Association Governing Board meeting covering flotation requirements for wooden boats, trophy discussions, referendum results, and discussions of measurement and structural issues.

The Chief Measurer discusses new flotation rules for Thistles, explaining how the recent ruling affects minimum flotation requirements and provides alternatives for adding flotation weight. The memo details specific calculation methods and materials for complying with the new 400-pound positive flotation requirement.

Practical advice on how to protect a boat's rails from damage at piers, docks, and seawalls using affordable styrofoam pipe insulation as a protective solution.

Technical article discussing flotation and self-rescue characteristics of Thistles, exploring the problems that arise when self-rescue fails and analyzing flotation categories and their trade-offs.

An editorial addressing water safety concerns, discussing flotation devices, weather preparation, and preparations for an unexpected incident. The article highlights recent discussions on the list-serve about safety equipment and introduces additional resources on water safety.

A comprehensive list-serve discussion on flotation systems in Thistles, covering hull flotation, personal flotation devices (PFDs), proper use and advantages of inflatable jackets, and key safety lessons learned from boating incidents.

A comprehensive guide to understanding capsizing in modern Thistles, examining how the introduction of flotation has changed recovery procedures and techniques. The article discusses attitudes toward capsizing, historical changes in design, and practical recovery methods.

Chief Measurer Ron Smith discusses the Floatation Committee's ongoing work on safety requirements for Thistle boats. The memo addresses the need to increase floatation in wooden boats from 700 to 1000 pounds to achieve the same self-rescue capability as fiberglass boats with large bow tanks.

Ron Smith provides detailed technical guidance on flotation requirements and calculations for Thistle hulls. The memo discusses flotation block arrangements, volume formulas for different flotation configurations, and the rationale behind a proposed amendment to increase minimum buoyancy from 700 to 1000 pounds for all Thistles.

A comprehensive memo about floatation requirements in Thistle boats, examining the history of floatation specs, recent proposals to increase minimums from 750 lbs to 1000 lbs, and the practical considerations around crew safety and boat performance. The Chief Measurer's committee is studying whether to recommend increased floatation requirements.

A family discovers that their used fiberglass Thistle has insufficient flotation after capsizing at Lake Erie Districts. The article details their efforts to improve the boat's safety by sealing leaks, adding foam insulation, and installing an airbag, ultimately making the boat suitable for junior racing on open water.

An article about boat floatation improvements for older D&M fiberglass Thistles. The author describes identifying inadequate floatation, and implementing solutions including airbags, foam replacements, and additional flotation to improve capsize safety.

Fleet 53 proposes modifying Chief Measurer's Ruling #7 to allow supplemental flotation under seats of wooden-hulled Thistles to extend beyond the vertical plane of the inside edge of seats (up to 1'4" from inside hull skin). The proposal aims to improve self-rescue capability of wooden boats after capsizing by providing flotation equivalent to what fiberglass boats are already allowed. The article includes reasoning and numerous comments from class members debating the merits and concerns of the amendment.

Environmental and health guidance on sunscreen selection. The article explains the difference between physical and chemical sunscreen barriers, warning against oxybenzone and recommending zinc oxide or titanium dioxide as safe alternatives for both personal health and marine ecosystems.