Roger has nailed it. When the stuff hits the fan coastal cruisers want to be home sipping a warm hot spiced wine.
There is an international design standard for recreational sailboats. Boats are divided into categories based on certain parameters in respect to stability, buoyancy, and other relevant handling characteristics. These categories are:
Category A - Ocean; Extended voyages with wind force in excess of Beaufort force 8, and significant wave height of 4 meters or above.
Category B – Offshore; Off shore voyages in possible wind force of Beaufort force 8 and significant wave heights of up to 4 meters.
Category C – Inshore Voyages on coastal waters, large lakes, bays estuaries, or rivers, where wind force of up to force 6 on the Beaufort scale and significant wave heights of up to 2 meters may be experienced.
Category D – Sheltered waters. Designed for voyages on sheltered inland waterways, including lakes, rivers and canals, where wind force 4 and significant wave height of 0.5 meters may be experienced.
I believe the Seward 25 is a category C vessel. These categories are not locked in stone. It is possible for a vessel to be in more than one design category provided all requirements for those categories are met. Recommend you do your own research and do an honest assessment of your skills, experience, and equipment.