| 開發人員: | Mathias Wagner (1) | ||
| 價錢: | $12.99 | ||
| 排名: | 0 | ||
| 評測: | 0 寫評論 | ||
| 清單: | 0 + 0 | ||
| 點數: | 0 + 3 (5.0) ¡ | ||
| App Store | |||
描述
This app has been developed by a sailor living at anchor. It is based on physics rather than rules.
Only too often does anchoring advice boil down to: Use a scope (i.e. ratio of chain length to water depth) of 3:1 in calm weather, and increase this to 5:1 or 7:1 as the wind picks up. This advice is independent of your vessel’s characteristics, independent of water depth, swell, or even the wind strength. So, is a scope of 7:1 still good enough for the storm tonight? Is the snubber or bridle you are using good enough to keep you safe at anchor?
The Anchor Chain Calculator allows you to calculate the minimally required anchor chain and/or rope length based on a number of vessel characteristics and sea / weather conditions. It tells you what load the anchor will have to bear, and when you are using a snubber, bridle or rope, how much of the swell it absorbs, and how much it reduces the anchor load. When anchoring in shallow water it is particularly important to include these dynamic and elastic effects caused by strong swell and gusts.
The app can work with a chain-only scenario as well as with an arbitrary mix of rope and chain. So, despite its name, it can also deal with a rope without any chain at all. ;)
You can also restrict the chain or rope length, if you have to - perhaps because of nearby neighbours or obstacles - and get information how this restriction affects the anchor load and the angle at which the chain pulls at the anchor.
The app has two modes of working: Basic Mode and Expert Mode. With Basic Mode you will be able to use the app right away, whilst Expert Mode allows you to enter more technical details of your boat if you know them.
You can use either metric units (metres, daN / kp, and mm for chain thickness) or imperial units (feet, lbs, and inch for chain thickness).
You can store different vessel configurations by name and so can easily switch, e.g., between different snubber, bridle, rope or vessel setups (e.g., a snubber for the lunch stop, another snubber for normal usage, and a third longer and even more elastic snubber for really bad weather). These setups can be locked to prevent accidental overwriting.
This app is also great for playing through all kinds of "what if?” scenarios. It will help you to plan ahead and be better prepared.
The perfect addition to an anchor alarm / anchor watch for safer anchoring!
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價錢
- 今天: $12.99
- 最小值: $7.99
- 最大值: $12.99
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開發人員
- Mathias Wagner
- 平台: iOS 應用程式 (1)
- 清單: 0 + 0
- 點數: 0 + 3 ¡
- 排名: 0
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其他資訊
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