stay in the marina.
The Naval term for a submarine's initial rise above the surface of the water is called "broaching", e.g., a submarine has broached the surface. It takes more effort to fully surface a boat to where it's buoyant enough to stay on the surface. Broaching can be done intentionally or unintentionally by nature. If a boat is at periscope depth (about 65' for most boats), and sea swells are large, a big enough wave can suck a boat right to the surface without warning.
Broaching is a machining process where a cutting tool with teeth removes material from a workpiece. It is commonly used to create slots, keyways, and other intricate shapes in metal parts. Broaching is known for its ability to produce highly precise and accurate results.
Surfacing or broaching.
Part of the manufacturing process for the barrel.
A process of putting rifling in a barrel.
The word broaching has to do with metal working. The inclusive definition and meaning can be somewhat on the complicated side unless you have a well - rounded working knowledge of tools and die parts. A broach is a tool with teeth and it clears away material. So broaching is the use of this tool. It is used in work where accuracy and exact precision is required.
Rotary broaching tools are used to precision cut internal polygon forms. This method is becoming very popular and has made appearances in the medical, automotive, aerospace, and plumbing fields.
When a boat broaches, it suddenly turns sideways to the waves, often causing the bow to dip into the water while the stern rises. This can lead to a dangerous situation where the boat risks capsizing or taking on water. Broaching typically occurs in rough seas or strong winds and requires quick corrective action from the crew to regain control and stability. If not managed properly, it can result in equipment damage or endanger the safety of those on board.
Neither the tool or the workpiece rotate
A broaching tool - or a reciprocating machining process such as a shaper, see the link in the resources below.
Roger Owen Smith has written: 'The broaching process applied to four common metals'