This is a detail from Marine Chart 18423 covering the area from Snee-oosh Beach and Hope Island in Skagit Bay west to Cornet Bay and Deception Pass.
North is left. Depths are in fathoms and feet.
It's about a nautical mile from the Cornet Bay boat ramps to Hoypus Point, from there to Hope Island is a mile-and-a-half, and it's about two miles around the island. From Snee-oosh Beach to Hope Island is maybe a half-mile.
Depending on the tide, there may be rips off Hoypus Point and both ends of Hope Island. The indicated flood and ebb currents are average maximums, in knots.