• The Mengi Yay NL 52 Plus (Project NB114) is a 52.6-meter flagship of the "NL Plus" capsule collection. It represents a high-profile collaboration between the Turkish shipyard Mengi Yay: , the legendary Italian design duo Nuvolari Lenard: , and Van Oossanen Naval Architects: .
• Designed to maximize luxury within a 499 GT volume, it offers the amenities and "big boat" feel of a much larger vessel while avoiding the regulatory complexities of the 500+ GT category.

1. Exterior & Deck Innovations

• The exterior is characterized by a sleek, modern profile that emphasizes "essential luxury" and a seamless connection to the waterline.
• The Beach Club A massive aft area featuring hydraulic fold-down platforms that expand the deck space directly over the water. It includes an integrated custom pool: at the stern.
• Foredeck Cinema The forward lounge is multifunctional; by day it is a private sunbathing area, and by night it transforms into an open-air cinema: with a pop-up screen.
• Massive Sundeck One of the largest in its class, featuring a heated spa pool (Jacuzzi): , a fire pit, a full bar, and versatile areas for dining and lounging.
• Tender Storage Unusually for this size, it features a full-beam tender garage: forward, capable of housing a 7-meter main tender, a crew tender, and various water toys, keeping the aft decks clear for guest use.

2. Interior & Accommodations

• The interiors, also by Nuvolari Lenard , focus on a "Mediterranean lifestyle" with high-end sustainable materials and expansive glass for natural light.
• Owner’s Suite Located on the main deck, this full-beam sanctuary includes a private study, a dressing room, and a unique slide-out balcony: that the owner can operate without crew assistance.
• Guest Suites Four additional cabins on the lower deck—two VIPs and two doubles/twins—accommodating a total of 10 guests: .
• Wellness Center Below the main beach club sits a dedicated wellness zone equipped with a sauna, gym/fitness area: , and a relaxation lounge.
• Crew Accommodations for 9 crew members: across 5 cabins ensure a high service-to-guest ratio.

3. Technical Specifications

• The yacht utilizes a high-efficiency displacement hull engineered by Van Oossanen to ensure stability and long-range capability.
• Construction Steel hull and Aluminum superstructure.
• Engines Twin MAN V12: .
• Performance 16-knot top speed; 12-knot cruising speed.
• Range An impressive 4,000 nautical miles: , making it a true transoceanic vessel.
• Classification RINA C Hull • MACH YCh - Unrestricted - AUT UMS - Comfort (Large Yacht) - Green Plus+ Red Ensign Group (REG) Yacht Coa Part A compliance