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Open-water trip, this route crosses Buzzards Bay, passes near the Elizabeth Islands, and heads into Rhode Island Sound / Block Island Sound. It requires careful weather routing, as conditions can change rapidly
Optimized for marine passage planning, vessel routing, and coastal or offshore weather tracking. This automated marine weather routing tool updates daily using premium data models. Below is the weather, wave, and ocean current layout for a standard vessel transit from Onset Harbor, MA to Block Island, RI.
Expect a majority of reaching conditions with steady motion. Winds range from 3 to 9 kts with waves 0.7 to 2.9 ft with period of 4 to 6 seconds. Overall, seas and wind frequently opposed, expect confused motion. Wind angles: 75% reaching, 25% on the nose. Sea state: 50% cross-seas, 50% opposed.
Points of Sail
| Category | Point of Sail | Wind Angle | Portion of Passage |
|---|---|---|---|
| On the Nose | No-Go Zone | 0–45° | 25% |
| Reaching | Close Hauled | 45–80° | 50% |
| Reaching | Beam Reach | 80–110° | 25% |
| Reaching | Broad Reach | 110–145° | 0% |
| Following | Run | 145–180° | 0% |
Sea State & Wave Motion
| Sea State | Wind vs. Waves | Boat Motion | Portion of Passage |
|---|---|---|---|
| Aligned | Waves run with the wind | Steady, organized | 0% |
| Cross Seas | Waves cross the wind | Rolling | 50% |
| Opposed | Waves against the wind | Choppy, confused | 50% |
