William B. Tennison: The Evolution of a Chesapeake Bay Bugeye
The William B. Tennison stands as a remarkable example of maritime engineering and adaptation. Originally constructed as a nine-log sailing bugeye—a specialized type of vessel common to the Chesapeake Bay—this ship has transitioned through various roles, evolving from a sailing craft into a functional buy-boat.
Key Facts
- Construction: Built using nine pitch pine logs.
- Length: 60.5 feet (18.4 m) on deck.
- Beam: 17.5 feet (5.3 m).
- Draft: 4.5 feet (1.4 m).
- Hull Design: Flat-bottomed with rounded chines and sharp ends.
- Conversion: Transitioned from a sailing bugeye to a powered buy-boat.
Architectural Design and Construction
The foundation of the William B. Tennison is its unique log construction. The hull was built using pitch pine logs that measure 9 inches (23 cm) thick at the keel, tapering down to 6 inches (15 cm) at the outer edges. To provide necessary freeboard—the distance from the waterline to the upper deck—the builders added oak frames at approximately 30-inch (76 cm) centers, upon which framing and planking were installed.
The hull form is characterized by a flat bottom and rounded chines (the angle where the side of the hull meets the bottom), with a sharp profile at both the bow and the stern. Internally, a bulkhead—a dividing wall—separates the foc'sle (the forward part of the ship) from the hold.
[ไม่มีภาพประกอบ]Conversion to a Powered Buy-Boat
Over time, the William B. Tennison underwent significant modifications to serve as a buy-boat, a vessel used to purchase oysters from smaller boats. This conversion required the removal of the mainmast and the running rigging associated with the foremast, as these were no longer needed for sailing. The centerboard trunk was also removed to accommodate the new configuration.
To facilitate power, a second bulkhead was installed between the hold and the new engine compartment. The vessel's stern was modified with a patent stern, which squared the deck above the sharp stern to create additional working space. Additionally, a portion of the rudder was cut away to make room for the propeller.
The foremast was repurposed for cargo handling, utilizing two gaff-rigged booms to hoist bushel-sized oyster baskets from other vessels directly into the hold.
[ไม่มีภาพประกอบ]Onboard Accommodations and Features
A defining feature of the converted Tennison is its pilothouse, a standard element of Chesapeake Bay buy-boats. The pilothouse features a rounded front with three windows, and a door and window on each side, all finished with vertical tongue and groove cypress siding.
The living quarters are divided between the aft and forward sections. The aft area contains two bunks on the port side and an enclosed head (bathroom). Access to the engine compartment is provided via a floor hatch. Historically, the foc'sle served as the primary living space, housing a table, a cookstove, and three bunks.
[ไม่มีภาพประกอบ]Technical Specifications Summary
| Feature | Specification |
|---|---|
| Deck Length | 60.5 feet (18.4 m) |
| Beam Width | 17.5 feet (5.3 m) |
| Draft | 4.5 feet (1.4 m) |
| Primary Hull Material | Pitch Pine Logs |
| Framing Material | Oak |
| Siding Material | Cypress |
Frequently Asked Questions
What is a nine-log sailing bugeye?
It is a vessel constructed using a foundation of nine longitudinal logs, typically tapering from the keel to the edges, a design characteristic of certain Chesapeake Bay craft.
How was the William B. Tennison modified for power?
The conversion involved adding an engine compartment separated by a bulkhead, removing the centerboard trunk, and cutting away part of the rudder to install a propeller.
What is a patent stern?
A patent stern is a modification used to square off the deck area above a sharp stern, providing more usable working space for the crew.
How did the vessel handle oyster baskets?
After its conversion, the foremast was used in conjunction with two gaff-rigged booms to hoist bushel-sized oyster baskets from other boats into the hold.
What materials were used for the pilothouse?
The pilothouse was constructed using vertical tongue and groove cypress siding.