ROLL is the instantaneous value of the angle between the reference plane and the horizontal, measured in an athwartship vertical plane.

横摇以从左到右通过舰身的垂直，量度参考与水间所形成的即角度。

ROLL is the instantaneous value of the angle between the reference plane and the horizontal, measured in an athwartship vertical plane.

横摇以从左到舰身的垂直面，量度参考面与水平面之间所形的即角度。

ROLL is the instantaneous value of the angle between the reference plane and the horizontal, measured in an athwartship vertical plane.

横摇以从左到右通过舰身面，量度参考面与水平面之间所形成即角度。

ROLL is the instantaneous value of the angle between the reference plane and the horizontal, measured in an athwartship vertical plane.

横摇以从左到右通过舰身面，量度参考面与水平面之间所形成即角度。

ROLL is the instantaneous value of the angle between the reference plane and the horizontal, measured in an athwartship vertical plane.

横摇以从左到右通过舰身的，量度参考与水平之间所形成的即角度。

ROLL is the instantaneous value of the angle between the reference plane and the horizontal, measured in an athwartship vertical plane.

横摇到右通舰身的垂直面，量度参考面与水平面之间所形成的即角度。

ROLL is the instantaneous value of the angle between the reference plane and the horizontal, measured in an athwartship vertical plane.

横摇以从左到右通舰身垂直面，量度参考面与水平面之间所形成即角度。

ROLL is the instantaneous value of the angle between the reference plane and the horizontal, measured in an athwartship vertical plane.

横摇以从左到右通的垂直面，量度参考面与水平面之间所形的即角度。

ROLL is the instantaneous value of the angle between the reference plane and the horizontal, measured in an athwartship vertical plane.

横摇以从左到右通过舰身的垂直面，量面与水平面之间所形成的即角。