Estimating Position

Reading Currents
Currents GLOSSARY currents - the directional flow of the sea out at sea can push a vaka off course and affect its speed. If a vaka is sailing against the current, its speed is lower, but if it is sailing with the current, its speed is higher. A wayfinder needs to know how to read the currents and adjust the course of the vaka if necessary. A destination island can have different star paths GLOSSARY star paths - the sequence of stars to follow from one island to another for currents of different directions and strengths.

When starting out, a wayfinder watches to see if the vaka moves sideways in relation to points on the land. When already away from land, a wayfinder looks for other clues about currents. For example, he can read the direction and strength of a current by noting how the water moves in relation to the wind direction.

• If the waves stand up more than usual in a peaky sort of appearance when they are moving with the wind, the current is moving against them [See figure 1].
• If white caps fall backwards into the wind, the current is moving against the wind [See figure 2].
• If the waves are smaller and flatter than usual, they are moving with the wind and the current [See figure 3].
• If white caps fall smoothly and their foam moves in a long line with the wind, the current is moving with the wind [See figure 4].
• When the sea is calm, ripples GLOSSARY ripples - small movements on the surface of the water on the water’s surface can show the direction and strength of a current [See figure 5].
• Lines of drifting GLOSSARY drifting - floating with the current wood and other objects can sometimes form where two currents meet [See figure 6].

Feeling Currents

Voyaging Leader, Jonas Hollani

“I put my leg into the sea to feel which direction the current was moving. If the current falls straight against the side of my leg then it mean that the current is following the side of an island. But if the current comes from a different angle, then I know it comes from the open ocean. The current that follows the island, we say it follows the edge of the reef.”