ultimate 20 segelboot kaufen

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Sailboat Guide

1998 Ultimate Ultimate 20

Description

Seller's Description

Ultimate 20 #121 for sale. Purchased the boat in 2021 to race in local Wednesday nights and frostbite in Annapolis. Made several upgrades to the boat and restored the trailer. The boat has the C-Tech carbon mast (flex’s like the aluminum one) which allowed us to equip custom PHRF sails including square top mainsail and doesn’t kill the rating. This boat is a rocket and a winner. The Torquedo outboard makes this boat an absolute gem. Easy to trailer/launch from a boat ramp, only draws 8 inches with keel up. This boat has been well cared for and will be dearly missed. Upgrading to an overnight racer. Not in a rush to sell, entertaining offers.

Equipment: PHRF High Performance Sails - Made by Jenkins sails in 2022 2 high performance Spinnakers - light and heavy air made by Jenkins Sails in 2022 One Design main/jib - Doyle. Jib is in great shape and is crunchy. Main is in good condition and race ready. New Torquedo electric outboard- 2021 New Vang - 2021 New Novasail Digital GPS/Compass - 2022 New Halyards - 2022 New Rigging - 2022 New Traveler - 2022 New Gudgeons - 2022 New Sunbrella Sail Covers -2022 New Keel Blocks - 2023 New Tiller Extension - 2023 Restored Zieman Trailer - 2022 including new wheels/tires, new coupler, new winch and refitted bunks.

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)

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