It sounds like you're in need of a reliable mobile broadband (MBL) router with an external antenna option to improve your internet access on your steel boat, especially for gaming and streaming to a smart TV. Here are a few recommendations that might suit your needs within the sub-£200 budget:
TP-Link Archer MR600:
This router supports 4G+ Cat6 speeds for faster internet.
It has two detachable external antennas for better signal reception.
The TP-Link Tether app allows for easy setup and management.
It's suitable for general internet access, gaming, and streaming.
Huawei B535:
The Huawei B535 is known for its strong Wi-Fi coverage.
It supports 4G+ connectivity and has four Gigabit Ethernet ports.
You can connect an external antenna for better signal reception.
It's versatile and well-regarded for its performance.
NETGEAR Nighthawk M1:
You can screw off supplied antennas and connect an external antenna for outside.
TP-Link Archer MR600:
This router supports 4G+ Cat6 speeds for faster internet.
It has two detachable external antennas for better signal reception.
The TP-Link Tether app allows for easy setup and management.
It's suitable for general internet access, gaming, and streaming.
Huawei B535:
The Huawei B535 is known for its strong Wi-Fi coverage.
It supports 4G+ connectivity and has four Gigabit Ethernet ports.
You can connect an external antenna for better signal reception.
It's versatile and well-regarded for its performance.
NETGEAR Nighthawk M1:
You can screw off supplied antennas and connect an external antenna for outside.