The ecological dynamics of decision-making in sailing

Competitive sailing is characterised by continuous interdependencies of decisions and actions. All actions imply a permanent monitoring of the environmental conditions, such as intensity and direction of the wind, sea characteristics, and the behaviour of the opponent sailors. These constraints on sailors’ behavior are in constant change implying continuous adjustments in sailors’ actions and decisions. Among the different parts of a regatta, tactics and strategy at the start are particularly relevant. Among coaches there is an adage that says that “the start is 50% of a regatta” (Houghton, 1984; Saltonstall, 1983/1986). Olympic sailing regattas are performed with boats of the same class, by one, two or three sailors, depending on the boat class. Normally before the start, sailors visit the racing venue and analyse wind and sea characteristics, in order to fine- tune their boats accordingly. Then, five minutes before the start, sailors initiate starting procedures in order to be in a favourable position at the starting line (at the “second zero”). This position is selected during the start period according to wind shifts tendencies and the actions of other boats (Figure 11.1). Only after the start signal can the boats cross the imaginary starting line between the race committee signal boat “A” and the pin end boat. The start takes place against the wind (upwind), and the boats start racing in the direction of mark 1. Based on the evaluation of the sea and wind characteristics (e.g. if the wind is stronger at a particular place on the course), sailors re- adjust their strategy for the regatta. This strategy may change during the regatta, according to wind changes and adversary actions. More to the point, strategic decisions constrain and are constrained by on- line decisions during the regatta.

Seasonal variations in the body composition of lightweight rowers

OBJECTIVE To monitor the seasonal body composition alterations in 18 lightweight rowers (six females, 12 males) across a rowing season incorporating preseason, early competition, competition, and postseason. METHODS Subject age was 23.1 (SD 4.5) years, height 170.8 (5.6) cm (female, 23.5 (3.5) years, 180.5 (2.7) cm (male). Body weight, fat mass, and fat-free mass (FFM) were assessed using dual energy x ray absorptiometry (DXA-L Lunar) and skinfold techniques. Weight control techniques were documented before major regattas by a questionnaire. RESULTS Female body weight was reduced from 61.3 (2.9) to 57.0 (1.1) kg (5.9%), while male body weight was reduced from 75.6 (3.1) to 69.8 (1.6) kg (7.8%) preseason to competition season respectively. These body weight reductions were mirrored by a significant reduction in fat mass as indicated by the sum of skinfolds [female seven sites: 80.9 (8.1) to 68.2 (11.8) mm; male eight sites: 54.2 (8.7) to 41.8 (4.8) mm], percentage body fat [female 22.1 (1.0) to 19.7 (2.4)%; male 10.0 (0.9) to 7.8 (0.8)%], and total fat [female 12.5 (5.2) to 10.9 (1.4) kg; male 7.3 (1.9) to 5.6 (1.8) kg] (DXA). In contrast, no changes were observed in FFM despite a season of intensive rowing training. Seasonal body weight control was achieved through reduced total energy and dietary fat intakes. Acute body weight reductions were achieved by exercise in 73.3% of participants, food restriction in 71.4%, and fluid restrictions in 62.9%. CONCLUSIONS Seasonal body weight alterations in lightweight rowers are in response to a significant reduction in fat mass. However, the weight restrictions appear to be limiting an increase in FFM which could be beneficial to rowing performance.

Royal Canadian Henley Regatta fonds, 1948-1983 (non-inclusive)

In 1903, the Canadian Association of Amateur Oarsmen had their request granted to make the Old Welland Canal at Port Dalhousie the permanent site of the Royal Canadian Henley Regatta. That same year organized rowing was established in St. Catharines when the St. Catharines Rowing and Canoe Club was formed. The Henley course was completed in July of 1903 after rowing was well underway. Although the Henley course served as an athletic and social event, rowing itself was slow to grow in the St. Catharines area. In 1915 the Regatta was cancelled for the duration of WWI and reinstated in 1919 when an increased public interest in the sport began to grow. Two years later, the Henley Aquatic Association was formed in order to control, maintain and improve the rowing facilities. This association was responsible for building a new clubhouse at Ann Street in 1921 and in 1931 completing the grandstands. Also in the 1930s the association had the Federal Government approve their appeal to have the Henley waters dredged for the first time. The St. Catharines Rowing Club re-located its headquarters to the Lakeport Road site. The 1940s brought more support from local groups and with that more events. In 1945, the St. Catharines Junior Chamber of Commerce began helping to organize and promote rowing locally. One of the new events at the Henley course was the "Schoolboy Championships". The growth of both rowing and the Henley continued growing through the 1950s. The Henley Aquatic Association acquired Reid's Island, now Henley Island, mainly through the efforts of Ted Nelson. In the 1960s, rowing really took off in St. Catharines. Women began to become recognized in the sport when Brock University created a women's rowing team. The second dredging was completed in 1964, leading to the creation of a world class rowing course. The facilities were upgraded to international standards and the Henley rowing course became Canada's first Class A FISA (Fédération Internationale des Sociétés d’Aviron or International Federation of Rowing Associations) rowing course. The first North American Rowing Championship was held at the Henley course in 1967 and again in 1970 for the third championship. The Canadian Henley Rowing Corporation formed in 1972, along with the St. Catharines, Parks and Recreation Department created the first rowing school for youth. Since 1960, St. Catharines has been at a competitive level with other International rowing courses. The city continues to produce Olympic level athletes today.

Boston Harbor, Massachusetts, 1882 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Chart of Boston Harbor : from the best authorities. It was published by N.S. Dearborn in 1882. Scale [ca. 1:85,000]. Covers Boston Harbor and adjacent lands. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Massachusetts State Plane Coordinate System, Mainland Zone (in Feet) (Fipszone 2001). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This map shows coastal features such as beacons, buoys, rocks, channels, points, coves, islands, life boat stations, and more. It also shows four regatta courses of the Hull Yacht Club. Depths are shown by soundings and shading. It shows land features such as roads, railroads, settlements, drainage, and more. This layer is part of a selection of digitally scanned and georeferenced historic maps of Massachusetts from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of regions, originators, ground condition dates (1755-1922), scales, and purposes. The digitized selection includes maps of: the state, Massachusetts counties, town surveys, coastal features, real property, parks, cemeteries, railroads, roads, public works projects, etc.