List primary longitudinal strength members and transverse strength members What are the roles of those members in a ship’s framing system

Primary longitudinal strength members in a ship's framing system include keel, stem, sternpost, and stringers. Transverse strength members include frames, beams, and deck longitudinals.

The roles of these members in a ship's framing system are as follows:

1. Keel: The keel is the backbone of the ship, running from bow to stern along the centerline. It provides longitudinal strength and stability to the ship.

2. Stem: The stem is the forward-most part of the keel, which extends upward to form the bow of the ship. It provides longitudinal strength and helps to deflect waves.

3. Sternpost: The sternpost is the aft-most part of the keel, which extends upward to form the stern of the ship. It provides longitudinal strength and helps to stabilize the ship.

4. Stringers: Stringers are longitudinal members that run parallel to the keel and provide additional longitudinal strength to the hull.

5. Frames: Frames are transverse members that run perpendicular to the keel and provide lateral strength to the hull. They also help to maintain the shape of the hull.

6. Beams: Beams are transverse members that run across the width of the ship and provide support for the decks and superstructure.

7. Deck longitudinals: Deck longitudinals are longitudinal members that run parallel to the deck and provide additional support for the decks and superstructure.

Overall, the primary longitudinal and transverse strength members work together to form the ship's framing system, which provides strength, stability, and shape to the hull