The men's eight according to the invention has an elongated hull that ends in a pointed bow and a pointed stern. Given a total weight of 938 kg, the waterline is 17,211 mm±5%, preferably ±3% and most preferably ±2%. Given division into 15 segments of equal length and in the case of a total weight of 938 kg, particular values are also presented in table form for the respective cross-sectional area below the waterline WL, the respective circumference below the waterline WL, the respective width at the waterline WL, and the respective width ratio based on the middle segment 7, each having a tolerance of ±5%, preferably ±3% and most preferably ±2%. The women's eight according to the invention is designed with similar lines for a total weight of 858 kg.

The men's eight according to the invention has an elongated hull that ends in a pointed bow and a pointed stern. Given a total weight of 938 kg, the waterline is 17,211 mm±5%, preferably ±3% and most preferably ±2%. Given division into 15 segments of equal length and in the case of a total weight of 938 kg, particular values are also presented in table form for the respective cross-sectional area below the waterline WL, the respective circumference below the waterline WL, the respective width at the waterline WL, and the respective width ratio based on the middle segment 7, each having a tolerance of ±5%, preferably ±3% and most preferably ±2%. The women's eight according to the invention is designed with similar lines for a total weight of 858 kg.

The present invention provides an angle changeable apparatus and an oar such that the shaft angle is easily adjustable. Disclosed is an angle changeable apparatus 1 for variably changing an angle of a shaft 110 inserted in a sleeve 10, including: a shaft-side member 20 fixed to the shaft 110; a sleeve-side member 30 fixed to the sleeve 10; and a slider 40 configured to slide between the shaft-side member 20 and the sleeve-side member 30, wherein the shaft-side member 20 has a first guiding part extending in a shaft direction, the sleeve-side member 30 has an elongated hole 31 extending in an oblique direction relative to the shaft direction, the slider 40 has a groove 41c guided by the first guiding part and a slider main body 41 guided by the elongated hole 31, and when the slider 40 slides, the shaft-side member 20 and the sleeve-side member 30 are subject to relative rotation so that the angle of the shaft 110 relative to the sleeve 10 is changeable.

A display instrument 1 for a coxed rowing boat has a main-body 2 with a display head 3 displaying rowing-related measurements digitally at its front end, and a resilient partially-spherical extension 7 from its rear end. In the assembled instrument 1, the extension 7 is entered into an open-mouth 13 of a cup-receptacle 11 to be gripped resiliently surface-to-surface within a peripheral rim 14 of the mouth 13 so as to resists relative movement but allows manual adjustment of orientation of the main-body 2 relative to the receptacle 11 to facilitate the cox's view of the display. The receptacle 11 is entered in an aperture 16 of a dashboard 17 adjacent the cox's position 18 in the boat, and electronic circuitry of the instrument 1 is receptive of GPS signals to calculate boat and water-stream speeds for display.

The present invention relates to a rowing seat (1) for rowing and kayaking boats and exercise equipment, comprising a first face (2) adapted to support and carry a user, a second face (3) arranged opposite the first face, a first end (4) and a second end (5), a first side (6) and a second side (7), and a longitudinal axis (8) extending between the first end and the second end, wherein the first face (2) comprises a middle section (9) arranged substantially between the first and second sides (6, 7) and extending from the first end (4) towards the second end (5) with a length of at least 8 cm, the middle section (9) having a substantially convex support face (10) extending along the longitudinal axis, the support face (10) being adapted to support at least 50% of the user's weight during use of the rowing seat. The present invention also relates to a rowing, kayaking or exercise system comprising a rowing seat according to the present invention.

The men's eight according to the invention has an elongated hull that ends in a pointed bow and a pointed stern. Given a total weight of 938 kg, the waterline is 17,211 mm±5%, preferably ±3% and most preferably ±2%. Given division into 15 segments of equal length and in the case of a total weight of 938 kg, particular values are also presented in table form for the respective cross-sectional area below the waterline WL, the respective circumference below the waterline WL, the respective width at the waterline WL, and the respective width ratio based on the middle segment 7, each having a tolerance of ±5%, preferably ±3% and most preferably ±2%. The women's eight according to the invention is designed with similar lines for a total weight of 858 kg.

The men's eight according to the invention has an elongated hull that ends in a pointed bow and a pointed stern. Given a total weight of 938 kg, the waterline is 17,211 mm±5%, preferably ±3% and most preferably ±2%. Given division into 15 segments of equal length and in the case of a total weight of 938 kg, particular values are also presented in table form for the respective cross-sectional area below the waterline WL, the respective circumference below the waterline WL, the respective width at the waterline WL, and the respective width ratio based on the middle segment 7, each having a tolerance of ±5%, preferably ±3% and most preferably ±2%. The women's eight according to the invention is designed with similar lines for a total weight of 858 kg.

Equipment for the conversion of a sailboat hull, having a substantially rectangular cockpit, into a rowing boat includes a frame that is substantially rectangular. Such frame is shaped to be arranged with the two major sides at the two major sides of the cockpit and is provided with a removable locking system of the frame to the hull of the boat. Two cantilever members jut out beyond the sides of the hull and are connected to the frame at one end and are provided with rowlocks on the other end. A seat is also provided, slidable along at least one couple of guides parallel to the major sides of the frame.

Equipment for the conversion of a sailboat hull, having a substantially rectangular cockpit, into a rowing boat includes a frame that is substantially rectangular. Such frame is shaped to be arranged with the two major sides at the two major sides of the cockpit and is provided with a removable locking system of the frame to the hull of the boat. Two cantilever members jut out beyond the sides of the hull and are connected to the frame at one end and are provided with rowlocks on the other end. A seat is also provided, slidable along at least one couple of guides parallel to the major sides of the frame.

The invention disclosed herein is a device, method of use and kit for measuring and precisely setting the dimensions in wheeled and tracked devices or vehicles. It is particularly well-suited for rowing boats and simulators thereof, including but not limited to sweep rowing and sculling watercraft. It introduces a novel gauge and process to adjust wheels within tracked environments to minimize friction and enhance equipment performance. Further, the device is capable of precise measurement of both spread and span dimensions in rowing watercraft to optimize rigging.