Both configurations exist — a bimini top is either a 3-bow or 4-bow design, and the right choice depends on your boat length and how much shade coverage and structural rigidity you need.

A 3-bow bimini uses three horizontal aluminum arches to support the canopy fabric. It's lighter, folds more compactly for storage, and suits most boats up to around 18 feet. A 4-bow bimini adds a third interior support arch, which creates a larger, deeper canopy with better resistance to wind deformation — making it the better fit for longer boats or anyone who wants maximum shade coverage with a more stable frame at cruising speed.

  • 3-bow bimini tops are typically recommended for boats up to 18 feet in length.
  • 4-bow bimini tops add a fourth arch for greater canopy depth and wind stability on larger boats.
  • Solim bimini tops use 1-inch diameter aluminum frames on both 3-bow and 4-bow configurations.
  • Canopy fabric on Solim bimini tops is 1200D Oxford — the same construction as their boat cover line.
  • Mounting width and seat width — not just bow count — must be measured before ordering any bimini top.