In conventional engineering, vertical Anchor Lines are used to attach a fixed mooring boom or to the bottom of a floating dry dock. The vertical anchors have an inboard shape and are usually made from steel tubes coated with epoxy or acrylic resin. There are many advantages of using vertical anchoring, which can save a considerable amount of time and effort in the transportation of supplies. The primary advantage of this type of anchor line is that the inboard shape makes it impossible for an opponent to shoot an anchor from below.
It is common practice to use the inboard vertical anchor line when there are several boats to anchor or control. This method is also employed to prevent the use of the main line or dock slip. As the name suggests, the vertical anchor line has the inboard shape and hence cannot be shot from either side by an opponent. A vertical anchor line is often incorporated within a float switch or electric main line. Most boats prefer to use the vertical anchor line in place of the main lines to protect the machinery from damage and further damage.
Horizontal anchor lines are generally used when a boat is being towed behind another vessel. These horizontal lines are generally made from aluminum tubes. A tug boat can also be fitted with a drag chain or wire rope attached to the inboard end of the horizontal line. The purpose of using this method is to attach the boat to a tug vessel, so that it may be towed along behind another boat. This is a common method used when a boat's mooring is at a distance greater than 100 nautical miles from its owner.
Vertical anchor lines can also be used in conjunction with the inboard anchor line. When these two types of anchor lines are used together, they allow a boat to be steered in a particular direction. This allows the boats to travel along a particular course, instead of following an anchor line that takes the boat in different directions. Horizontal anchor lines are usually preferred over vertical anchor lines because they are less likely to undergo damage.
The application of both vertical and horizontal lines depends on several factors. The type of boat, the size of the craft and the weight of the vessel are some of the factors that have to be taken into consideration when deciding upon the use of these types of lines. In some cases, the need for more power in relation to the weight of a vessel may require a larger inboard anchor. While, in other cases, a smaller vertical anchor may be required, as compared to the larger horizontal anchor.
Vertical anchor lines are normally made from either steel or aluminum, with the former material being the preferred material for a longer period of time. The cost of these vertical anchor lines is relatively low, especially when compared to the inboard anchor line. The strength of the anchor line is also increased, as this is a stronger type of line. There are some specific conditions under which both the inboard and outboard vertical anchor lines may be used, but for general use both types are equally effective.