It's a logo of the Sailing Ship Medium pretty much reduced to a medium sailboat. The boat has two sails and a large hull. The waves and the current are pooling the boat east.
This is a Sail icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,300 icons, all in the same style and quality.